18992010 has 16 divisors (see below), whose sum is σ = 45580896. Its totient is φ = 5064528.

The previous prime is 18991981. The next prime is 18992027. The reversal of 18992010 is 1029981.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 633067 = 18992010 / (1 + 8 + 9 + 9 + 2 + 0 + 1 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316504 + ... + 316563.

It is an arithmetic number, because the mean of its divisors is an integer number (2848806).

Almost surely, 2^18992010 is an apocalyptic number.

18992010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18992010 is an abundant number, since it is smaller than the sum of its proper divisors (26588886).

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

18992010 is a wasteful number, since it uses less digits than its factorization.

18992010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633077.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 18992010 is about 4357.9823313088. The cubic root of 18992010 is about 266.8027551906.

The spelling of 18992010 in words is "eighteen million, nine hundred ninety-two thousand, ten".