18920902 has 48 divisors (see below), whose sum is σ = 38368512. Its totient is φ = 6795360.

The previous prime is 18920899. The next prime is 18920921. The reversal of 18920902 is 20902981.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 25663 + ... + 26389.

It is an arithmetic number, because the mean of its divisors is an integer number (799344).

Almost surely, 2^18920902 is an apocalyptic number.

18920902 is an abundant number, since it is smaller than the sum of its proper divisors (19447610).

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

18920902 is a wasteful number, since it uses less digits than its factorization.

18920902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 18920902 is about 4349.8163179610. The cubic root of 18920902 is about 266.4693599515.

The spelling of 18920902 in words is "eighteen million, nine hundred twenty thousand, nine hundred two".