18797914992 has 40 divisors (see below), whose sum is σ = 49106923920. Its totient is φ = 6195566080.

The previous prime is 18797914991. The next prime is 18797914997. The reversal of 18797914992 is 29941979781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18797914991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195859 + ... + 2204402.

It is an arithmetic number, because the mean of its divisors is an integer number (1227673098).

Almost surely, 2^18797914992 is an apocalyptic number.

18797914992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18797914992 is an abundant number, since it is smaller than the sum of its proper divisors (30309008928).

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

18797914992 is a wasteful number, since it uses less digits than its factorization.

18797914992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400361 (or 4400355 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 66.

The spelling of 18797914992 in words is "eighteen billion, seven hundred ninety-seven million, nine hundred fourteen thousand, nine hundred ninety-two".