18992151648 has 60 divisors (see below), whose sum is σ = 55855398060. Its totient is φ = 6330716352.

The previous prime is 18992151637. The next prime is 18992151679. The reversal of 18992151648 is 84615129981.

18992151648 is a `hidden beast` number, since 1 + 89 + 9 + 2 + 1 + 516 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18992151594 and 18992151603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3661018 + ... + 3666201.

It is an arithmetic number, because the mean of its divisors is an integer number (930923301).

Almost surely, 2^18992151648 is an apocalyptic number.

18992151648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18992151648 is an abundant number, since it is smaller than the sum of its proper divisors (36863246412).

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

18992151648 is an equidigital number, since it uses as much as digits as its factorization.

18992151648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327241 (or 7327224 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The spelling of 18992151648 in words is "eighteen billion, nine hundred ninety-two million, one hundred fifty-one thousand, six hundred forty-eight".