18090196992 has 512 divisors, whose sum is σ = 64423526400. Its totient is φ = 4904976384.

The previous prime is 18090196973. The next prime is 18090197003. The reversal of 18090196992 is 29969109081.

It is a tau number, because it is divible by the number of its divisors (512).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142442433 + ... + 142442559.

It is an arithmetic number, because the mean of its divisors is an integer number (125827200).

Almost surely, 2^18090196992 is an apocalyptic number.

18090196992 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 18090196992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32211763200).

18090196992 is an abundant number, since it is smaller than the sum of its proper divisors (46333329408).

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

18090196992 is an equidigital number, since it uses as much as digits as its factorization.

18090196992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The spelling of 18090196992 in words is "eighteen billion, ninety million, one hundred ninety-six thousand, nine hundred ninety-two".