1,973,637

3² × 219293

Starting at 1,973,637, the Collatz iteration reaches 1 after 140 steps. The first transition is 5920912; the starting value is odd with 6 positive divisors.

Prime Factor Structure

Factorization String 3^2 × 219293

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 6

Divisor Sum (σ) 2,850,822

Proper Divisor Sum 877,185

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #1973633 ← → #1973651

Radix Representation

Decimal	1973637
Binary	111100001110110000101 (21 bits)
Octal	0o7416605
Hexadecimal	0x1E1D85

Divisor Catalog (6)

1 3 9 219,293 657,879 1,973,637

Collatz Trajectory (140 steps to reach 1)

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

1,973,637 5,920,912 2,960,456 1,480,228 740,114 370,057 1,110,172 555,086 277,543 832,630 416,315 1,248,946 624,473 1,873,420 936,710 468,355 1,405,066 702,533 2,107,600 1,053,800 526,900 263,450 131,725 395,176 197,588 98,794 49,397 148,192 74,096 37,048 18,524 9,262 4,631 13,894 6,947 20,842 10,421 31,264 15,632 7,816 3,908 1,954 977 2,932 1,466 733 2,200 1,100 550 275 826 413 1,240 620 310 155 466 233 700 350

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