18911082 has 8 divisors (see below), whose sum is σ = 37822176. Its totient is φ = 6303692.

The previous prime is 18911071. The next prime is 18911111. The reversal of 18911082 is 28011981.

It is a sphenic number, since it is the product of 3 distinct primes.

18911082 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1575918 + ... + 1575929.

It is an arithmetic number, because the mean of its divisors is an integer number (4727772).

Almost surely, 2^18911082 is an apocalyptic number.

18911082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18911082 is a wasteful number, since it uses less digits than its factorization.

18911082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151852.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 18911082 is about 4348.6873881667. The cubic root of 18911082 is about 266.4232525312.

The spelling of 18911082 in words is "eighteen million, nine hundred eleven thousand, eighty-two".