18401164 has 6 divisors (see below), whose sum is σ = 32202044. Its totient is φ = 9200580.

The previous prime is 18401143. The next prime is 18401189. The reversal of 18401164 is 46110481.

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 as a sum of consecutive naturals, namely, 2300142 + ... + 2300149.

Almost surely, 2^18401164 is an apocalyptic number.

It is an amenable number.

18401164 is a deficient number, since it is larger than the sum of its proper divisors (13800880).

18401164 is a wasteful number, since it uses less digits than its factorization.

18401164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600295 (or 4600293 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 18401164 is about 4289.6577952093. The cubic root of 18401164 is about 264.0067912241.

The spelling of 18401164 in words is "eighteen million, four hundred one thousand, one hundred sixty-four".