166418344 has 32 divisors (see below), whose sum is σ = 320864040. Its totient is φ = 80870400.

The previous prime is 166418333. The next prime is 166418347. The reversal of 166418344 is 443814661.

It can be written as a sum of positive squares in 4 ways, for example, as 66618244 + 99800100 = 8162^2 + 9990^2 .

It is not an unprimeable number, because it can be changed into a prime (166418347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101854 + ... + 103474.

Almost surely, 2^166418344 is an apocalyptic number.

It is an amenable number.

166418344 is a deficient number, since it is larger than the sum of its proper divisors (154445696).

166418344 is a wasteful number, since it uses less digits than its factorization.

166418344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1977 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 166418344 is about 12900.3234067988. The cubic root of 166418344 is about 550.0477578364.

The spelling of 166418344 in words is "one hundred sixty-six million, four hundred eighteen thousand, three hundred forty-four".