166933157 has 4 divisors (see below), whose sum is σ = 167028876. Its totient is φ = 166837440.

The previous prime is 166933153. The next prime is 166933163. The reversal of 166933157 is 751339661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751339661 = 11941 ⋅62921.

It can be written as a sum of positive squares in 2 ways, for example, as 61952641 + 104980516 = 7871^2 + 10246^2 .

It is a cyclic number.

It is not a de Polignac number, because 166933157 - 2² = 166933153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166933153) 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, 45194 + ... + 48747.

It is an arithmetic number, because the mean of its divisors is an integer number (41757219).

Almost surely, 2^166933157 is an apocalyptic number.

It is an amenable number.

166933157 is a deficient number, since it is larger than the sum of its proper divisors (95719).

166933157 is an equidigital number, since it uses as much as digits as its factorization.

166933157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95718.

The product of its digits is 102060, while the sum is 41.

The square root of 166933157 is about 12920.2614911619. The cubic root of 166933157 is about 550.6143625234.

The spelling of 166933157 in words is "one hundred sixty-six million, nine hundred thirty-three thousand, one hundred fifty-seven".