1857297938372 has 12 divisors (see below), whose sum is σ = 3251134246080. Its totient is φ = 928402439496.

The previous prime is 1857297938341. The next prime is 1857297938491. The reversal of 1857297938372 is 2738397927581.

It is a junction number, because it is equal to n+sod(n) for n = 1857297938296 and 1857297938305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61615472 + ... + 61645607.

It is an arithmetic number, because the mean of its divisors is an integer number (270927853840).

Almost surely, 2^{1857297938372} is an apocalyptic number.

It is an amenable number.

1857297938372 is a deficient number, since it is larger than the sum of its proper divisors (1393836307708).

1857297938372 is a wasteful number, since it uses less digits than its factorization.

1857297938372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123264850 (or 123264848 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 71.

The spelling of 1857297938372 in words is "one trillion, eight hundred fifty-seven billion, two hundred ninety-seven million, nine hundred thirty-eight thousand, three hundred seventy-two".