165902159 has 8 divisors (see below), whose sum is σ = 168927120. Its totient is φ = 162884416.

The previous prime is 165902153. The next prime is 165902161. The reversal of 165902159 is 951209561.

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

It is a cyclic number.

It is not a de Polignac number, because 165902159 - 2¹⁶ = 165836623 is a prime.

It is a super-2 number, since 2×165902159² = 55047052721722562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165902153) 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, 69209 + ... + 71565.

It is an arithmetic number, because the mean of its divisors is an integer number (21115890).

Almost surely, 2^165902159 is an apocalyptic number.

165902159 is a deficient number, since it is larger than the sum of its proper divisors (3024961).

165902159 is a wasteful number, since it uses less digits than its factorization.

165902159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 165902159 is about 12880.3011998944. The cubic root of 165902159 is about 549.4784687055.

The spelling of 165902159 in words is "one hundred sixty-five million, nine hundred two thousand, one hundred fifty-nine".