18844620132 has 72 divisors (see below), whose sum is σ = 49149408000. Its totient is φ = 5611282560.

The previous prime is 18844620103. The next prime is 18844620169. The reversal of 18844620132 is 23102644881.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87007 + ... + 212742.

Almost surely, 2^18844620132 is an apocalyptic number.

18844620132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18844620132 is an abundant number, since it is smaller than the sum of its proper divisors (30304787868).

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

18844620132 is a wasteful number, since it uses less digits than its factorization.

18844620132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299813 (or 299798 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 18844620132 in words is "eighteen billion, eight hundred forty-four million, six hundred twenty thousand, one hundred thirty-two".