166157359 has 4 divisors (see below), whose sum is σ = 173381616. Its totient is φ = 158933104.

The previous prime is 166157357. The next prime is 166157401. The reversal of 166157359 is 953751661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 953751661 = 2237 ⋅426353.

It is a cyclic number.

It is not a de Polignac number, because 166157359 - 2¹ = 166157357 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 (166157357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3612094 + ... + 3612139.

It is an arithmetic number, because the mean of its divisors is an integer number (43345404).

Almost surely, 2^166157359 is an apocalyptic number.

166157359 is a deficient number, since it is larger than the sum of its proper divisors (7224257).

166157359 is an equidigital number, since it uses as much as digits as its factorization.

166157359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224256.

The product of its digits is 170100, while the sum is 43.

The square root of 166157359 is about 12890.2039937311. The cubic root of 166157359 is about 549.7600705561.

The spelling of 166157359 in words is "one hundred sixty-six million, one hundred fifty-seven thousand, three hundred fifty-nine".