18922086 has 20 divisors (see below), whose sum is σ = 42399852. Its totient is φ = 6307308.

The previous prime is 18922069. The next prime is 18922097. The reversal of 18922086 is 68022981.

It is a self number, because there is not a number n which added to its sum of digits gives 18922086.

It is a congruent 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 9 ways as a sum of consecutive naturals, for example, 58240 + ... + 58563.

Almost surely, 2^18922086 is an apocalyptic number.

18922086 is an abundant number, since it is smaller than the sum of its proper divisors (23477766).

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

18922086 is a wasteful number, since it uses less digits than its factorization.

18922086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116817 (or 116808 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18922086 is about 4349.9524135328. The cubic root of 18922086 is about 266.4749180576.

The spelling of 18922086 in words is "eighteen million, nine hundred twenty-two thousand, eighty-six".