18857855944932 has 24 divisors (see below), whose sum is σ = 44001755755776. Its totient is φ = 6285938855328.

The previous prime is 18857855944919. The next prime is 18857855944933. The reversal of 18857855944932 is 23944955875881.

It is not an unprimeable number, because it can be changed into a prime (18857855944933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5636173 + ... + 8335595.

It is an arithmetic number, because the mean of its divisors is an integer number (1833406489824).

Almost surely, 2^{18857855944932} is an apocalyptic number.

18857855944932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18857855944932 is an abundant number, since it is smaller than the sum of its proper divisors (25143899810844).

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

18857855944932 is a wasteful number, since it uses less digits than its factorization.

18857855944932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281587 (or 3281585 counting only the distinct ones).

The product of its digits is 3483648000, while the sum is 78.

The spelling of 18857855944932 in words is "eighteen trillion, eight hundred fifty-seven billion, eight hundred fifty-five million, nine hundred forty-four thousand, nine hundred thirty-two".