18964867932 has 96 divisors (see below), whose sum is σ = 49970511360. Its totient is φ = 6296822064.

The previous prime is 18964867931. The next prime is 18964867937. The reversal of 18964867932 is 23976846981.

18964867932 is a `hidden beast` number, since 1 + 89 + 6 + 486 + 79 + 3 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18964867932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964867931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2296603 + ... + 2304845.

It is an arithmetic number, because the mean of its divisors is an integer number (520526160).

Almost surely, 2^18964867932 is an apocalyptic number.

18964867932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18964867932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24985255680).

18964867932 is an abundant number, since it is smaller than the sum of its proper divisors (31005643428).

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

18964867932 is an equidigital number, since it uses as much as digits as its factorization.

18964867932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531 (or 8511 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 18964867932 in words is "eighteen billion, nine hundred sixty-four million, eight hundred sixty-seven thousand, nine hundred thirty-two".