166901793 has 8 divisors (see below), whose sum is σ = 224739456. Its totient is φ = 110166000.

The previous prime is 166901773. The next prime is 166901809. The reversal of 166901793 is 397109661.

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

It is not a de Polignac number, because 166901793 - 2²⁰ = 165853217 is a prime.

It is a super-2 number, since 2×166901793² = 55712417013229698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166901743) 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 7 ways as a sum of consecutive naturals, for example, 275113 + ... + 275718.

It is an arithmetic number, because the mean of its divisors is an integer number (28092432).

Almost surely, 2^166901793 is an apocalyptic number.

It is an amenable number.

166901793 is a deficient number, since it is larger than the sum of its proper divisors (57837663).

166901793 is a wasteful number, since it uses less digits than its factorization.

166901793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550935.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 166901793 is about 12919.0476816211. The cubic root of 166901793 is about 550.5798765634.

The spelling of 166901793 in words is "one hundred sixty-six million, nine hundred one thousand, seven hundred ninety-three".