166494752 has 18 divisors (see below), whose sum is σ = 327930309. Its totient is φ = 83210880.

The previous prime is 166494749. The next prime is 166494761. The reversal of 166494752 is 257494661.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 164762896 + 1731856 = 12836^2 + 1316^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9124.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 71852 + ... + 74132.

Almost surely, 2^166494752 is an apocalyptic number.

It is an amenable number.

166494752 is a deficient number, since it is larger than the sum of its proper divisors (161435557).

166494752 is an frugal number, since it uses more digits than its factorization.

166494752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572 (or 2283 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 166494752 is about 12903.2845430921. The cubic root of 166494752 is about 550.1319264795.

Subtracting 166494752 from its reverse (257494661), we obtain a palindrome (90999909).

The spelling of 166494752 in words is "one hundred sixty-six million, four hundred ninety-four thousand, seven hundred fifty-two".