18972902 has 16 divisors (see below), whose sum is σ = 31706640. Its totient is φ = 8454432.

The previous prime is 18972893. The next prime is 18972923. The reversal of 18972902 is 20927981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11828 + ... + 13335.

It is an arithmetic number, because the mean of its divisors is an integer number (1981665).

Almost surely, 2^18972902 is an apocalyptic number.

18972902 is a deficient number, since it is larger than the sum of its proper divisors (12733738).

18972902 is a wasteful number, since it uses less digits than its factorization.

18972902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25207.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 18972902 is about 4355.7894806797. The cubic root of 18972902 is about 266.7132477656.

The spelling of 18972902 in words is "eighteen million, nine hundred seventy-two thousand, nine hundred two".