18859029432 has 64 divisors (see below), whose sum is σ = 48062367360. Its totient is φ = 6164496000.

The previous prime is 18859029403. The next prime is 18859029461. The reversal of 18859029432 is 23492095881.

It is an interprime number because it is at equal distance from previous prime (18859029403) and next prime (18859029461).

It is a super-2 number, since 2×18859029432² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4234807 + ... + 4239257.

It is an arithmetic number, because the mean of its divisors is an integer number (750974490).

Almost surely, 2^18859029432 is an apocalyptic number.

18859029432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18859029432 is an abundant number, since it is smaller than the sum of its proper divisors (29203337928).

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

18859029432 is a wasteful number, since it uses less digits than its factorization.

18859029432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7844 (or 7840 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 18859029432 in words is "eighteen billion, eight hundred fifty-nine million, twenty-nine thousand, four hundred thirty-two".