18512432952 has 64 divisors (see below), whose sum is σ = 49858260480. Its totient is φ = 5694179712.

The previous prime is 18512432951. The next prime is 18512432957. The reversal of 18512432952 is 25923421581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18512432951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1092013 + ... + 1108835.

It is an arithmetic number, because the mean of its divisors is an integer number (779035320).

Almost surely, 2^18512432952 is an apocalyptic number.

18512432952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18512432952 is an abundant number, since it is smaller than the sum of its proper divisors (31345827528).

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

18512432952 is a wasteful number, since it uses less digits than its factorization.

18512432952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372 (or 20368 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The spelling of 18512432952 in words is "eighteen billion, five hundred twelve million, four hundred thirty-two thousand, nine hundred fifty-two".