1851032872420 has 48 divisors (see below), whose sum is σ = 4030083993600. Its totient is φ = 713399852160.

The previous prime is 1851032872397. The next prime is 1851032872433. The reversal of 1851032872420 is 242782301581.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6376660 + ... + 6660619.

It is an arithmetic number, because the mean of its divisors is an integer number (83960083200).

Almost surely, 2^{1851032872420} is an apocalyptic number.

1851032872420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1851032872420 is an abundant number, since it is smaller than the sum of its proper divisors (2179051121180).

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

1851032872420 is a wasteful number, since it uses less digits than its factorization.

1851032872420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13037548 (or 13037546 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 1851032872420 in words is "one trillion, eight hundred fifty-one billion, thirty-two million, eight hundred seventy-two thousand, four hundred twenty".