18164456 has 16 divisors (see below), whose sum is σ = 35851200. Its totient is φ = 8604144.

The previous prime is 18164453. The next prime is 18164459. The reversal of 18164456 is 65446181.

It is an interprime number because it is at equal distance from previous prime (18164453) and next prime (18164459).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18164453) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 59600 + ... + 59903.

It is an arithmetic number, because the mean of its divisors is an integer number (2240700).

Almost surely, 2^18164456 is an apocalyptic number.

It is an amenable number.

18164456 is a deficient number, since it is larger than the sum of its proper divisors (17686744).

18164456 is a wasteful number, since it uses less digits than its factorization.

18164456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119528 (or 119524 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 18164456 is about 4261.9779445699. The cubic root of 18164456 is about 262.8698628960.

The spelling of 18164456 in words is "eighteen million, one hundred sixty-four thousand, four hundred fifty-six".