4,163,618

2 × 2081809

Starting at 4,163,618, the Collatz iteration reaches 1 after 136 steps. The first transition is 2081809; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 2081809

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 6,245,430

Proper Divisor Sum 2,081,812

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #4163611 ← → #4163629

Radix Representation

Decimal	4163618
Binary	1111111000100000100010 (22 bits)
Octal	0o17704042
Hexadecimal	0x3F8822

Divisor Catalog (4)

1 2 2,081,809 4,163,618

Collatz Trajectory (136 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

4,163,618 2,081,809 6,245,428 3,122,714 1,561,357 4,684,072 2,342,036 1,171,018 585,509 1,756,528 878,264 439,132 219,566 109,783 329,350 164,675 494,026 247,013 741,040 370,520 185,260 92,630 46,315 138,946 69,473 208,420 104,210 52,105 156,316 78,158 39,079 117,238 58,619 175,858 87,929 263,788 131,894 65,947 197,842 98,921 296,764 148,382 74,191 222,574 111,287 333,862 166,931 500,794 250,397 751,192 375,596 187,798 93,899 281,698 140,849 422,548 211,274 105,637 316,912 158,456

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