1812943759936 has 63 divisors (see below), whose sum is σ = 3676759442377. Its totient is φ = 886937496320.

The previous prime is 1812943759897. The next prime is 1812943759987. The reversal of 1812943759936 is 6399573492181.

The square root of 1812943759936 is 1346456.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1616091817536 + 196851942400 = 1271256^2 + 443680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 506265666 + ... + 506269246.

Almost surely, 2^{1812943759936} is an apocalyptic number.

1812943759936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1812943759936 is the 1346456-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812943759936

1812943759936 is an abundant number, since it is smaller than the sum of its proper divisors (1863815682441).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1812943759936 is an frugal number, since it uses more digits than its factorization.

1812943759936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268 (or 3630 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 67.

The spelling of 1812943759936 in words is "one trillion, eight hundred twelve billion, nine hundred forty-three million, seven hundred fifty-nine thousand, nine hundred thirty-six".