18364546 has 8 divisors (see below), whose sum is σ = 27647100. Its totient is φ = 9148848.

The previous prime is 18364519. The next prime is 18364547. The reversal of 18364546 is 64546381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17732521 + 632025 = 4211^2 + 795^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18364546² = 674513099572232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18364547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16021 + ... + 17128.

Almost surely, 2^18364546 is an apocalyptic number.

18364546 is a deficient number, since it is larger than the sum of its proper divisors (9282554).

18364546 is a wasteful number, since it uses less digits than its factorization.

18364546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33428.

The product of its digits is 69120, while the sum is 37.

The square root of 18364546 is about 4285.3874970649. The cubic root of 18364546 is about 263.8315519398.

The spelling of 18364546 in words is "eighteen million, three hundred sixty-four thousand, five hundred forty-six".