18796990 has 16 divisors (see below), whose sum is σ = 33938352. Its totient is φ = 7495744.

The previous prime is 18796979. The next prime is 18796993. The reversal of 18796990 is 9969781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18796993) 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, 762 + ... + 6178.

It is an arithmetic number, because the mean of its divisors is an integer number (2121147).

Almost surely, 2^18796990 is an apocalyptic number.

18796990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18796990 is a deficient number, since it is larger than the sum of its proper divisors (15141362).

18796990 is a wasteful number, since it uses less digits than its factorization.

18796990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 18796990 is about 4335.5495614743. The cubic root of 18796990 is about 265.8863874962.

The spelling of 18796990 in words is "eighteen million, seven hundred ninety-six thousand, nine hundred ninety".