166164318 has 32 divisors (see below), whose sum is σ = 369688320. Its totient is φ = 55323000.

The previous prime is 166164311. The next prime is 166164337. The reversal of 166164318 is 813461661.

166164318 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 643 + 1 + 8 = 666.

It is a super-2 number, since 2×166164318² = 55221161152810248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166164311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72693 + ... + 74943.

It is an arithmetic number, because the mean of its divisors is an integer number (11552760).

Almost surely, 2^166164318 is an apocalyptic number.

166164318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166164318 is an abundant number, since it is smaller than the sum of its proper divisors (203524002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166164318 is a wasteful number, since it uses less digits than its factorization.

166164318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629 (or 3623 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 166164318 is about 12890.4739245693. The cubic root of 166164318 is about 549.7677454633.

It can be divided in two parts, 1661643 and 18, that added together give a palindrome (1661661).

The spelling of 166164318 in words is "one hundred sixty-six million, one hundred sixty-four thousand, three hundred eighteen".