18344164 has 12 divisors (see below), whose sum is σ = 32628988. Its totient is φ = 9021600.

The previous prime is 18344143. The next prime is 18344167. The reversal of 18344164 is 46144381.

It can be written as a sum of positive squares in 2 ways, for example, as 4875264 + 13468900 = 2208^2 + 3670^2 .

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 not an unprimeable number, because it can be changed into a prime (18344167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37347 + ... + 37834.

Almost surely, 2^18344164 is an apocalyptic number.

It is an amenable number.

18344164 is a deficient number, since it is larger than the sum of its proper divisors (14284824).

18344164 is a wasteful number, since it uses less digits than its factorization.

18344164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75246 (or 75244 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 18344164 is about 4283.0087555362. The cubic root of 18344164 is about 263.7339108055.

The spelling of 18344164 in words is "eighteen million, three hundred forty-four thousand, one hundred sixty-four".