18992696990 has 32 divisors (see below), whose sum is σ = 36210888000. Its totient is φ = 7147615744.

The previous prime is 18992696953. The next prime is 18992696999. The reversal of 18992696990 is 9969629981.

It is a self number, because there is not a number n which added to its sum of digits gives 18992696990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18992696999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491204 + ... + 528456.

It is an arithmetic number, because the mean of its divisors is an integer number (1131590250).

Almost surely, 2^18992696990 is an apocalyptic number.

18992696990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18992696990 is a deficient number, since it is larger than the sum of its proper divisors (17218191010).

18992696990 is a wasteful number, since it uses less digits than its factorization.

18992696990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40276.

The product of its (nonzero) digits is 34012224, while the sum is 68.

The spelling of 18992696990 in words is "eighteen billion, nine hundred ninety-two million, six hundred ninety-six thousand, nine hundred ninety".