18909102 has 32 divisors (see below), whose sum is σ = 39520800. Its totient is φ = 6023808.

The previous prime is 18909097. The next prime is 18909113. The reversal of 18909102 is 20190981.

It is a self number, because there is not a number n which added to its sum of digits gives 18909102.

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 15 ways as a sum of consecutive naturals, for example, 18468 + ... + 19464.

It is an arithmetic number, because the mean of its divisors is an integer number (1235025).

Almost surely, 2^18909102 is an apocalyptic number.

18909102 is an abundant number, since it is smaller than the sum of its proper divisors (20611698).

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

18909102 is a wasteful number, since it uses less digits than its factorization.

18909102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

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

The square root of 18909102 is about 4348.4597273058. The cubic root of 18909102 is about 266.4139539896.

The spelling of 18909102 in words is "eighteen million, nine hundred nine thousand, one hundred two".