18926257952 has 24 divisors (see below), whose sum is σ = 42584080896. Its totient is φ = 8111253312.

The previous prime is 18926257951. The next prime is 18926257997. The reversal of 18926257952 is 25975262981.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (18926257951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42245888 + ... + 42246335.

It is an arithmetic number, because the mean of its divisors is an integer number (1774336704).

Almost surely, 2^18926257952 is an apocalyptic number.

It is an amenable number.

18926257952 is an abundant number, since it is smaller than the sum of its proper divisors (23657822944).

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

18926257952 is an equidigital number, since it uses as much as digits as its factorization.

18926257952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84492240 (or 84492232 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 56.

The spelling of 18926257952 in words is "eighteen billion, nine hundred twenty-six million, two hundred fifty-seven thousand, nine hundred fifty-two".