165387879 has 16 divisors (see below), whose sum is σ = 245257440. Its totient is φ = 110151360.

The previous prime is 165387869. The next prime is 165387947. The reversal of 165387879 is 978783561.

It is not a de Polignac number, because 165387879 - 2¹⁶ = 165322343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165387829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33349 + ... + 37985.

It is an arithmetic number, because the mean of its divisors is an integer number (15328590).

Almost surely, 2^165387879 is an apocalyptic number.

165387879 is a deficient number, since it is larger than the sum of its proper divisors (79869561).

165387879 is a wasteful number, since it uses less digits than its factorization.

165387879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967 (or 5961 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 165387879 is about 12860.3218855517. The cubic root of 165387879 is about 548.9101050219.

The spelling of 165387879 in words is "one hundred sixty-five million, three hundred eighty-seven thousand, eight hundred seventy-nine".