165158634 has 16 divisors (see below), whose sum is σ = 333588960. Its totient is φ = 54507600.

The previous prime is 165158633. The next prime is 165158677. The reversal of 165158634 is 436851561.

It is a junction number, because it is equal to n+sod(n) for n = 165158592 and 165158601.

It is not an unprimeable number, because it can be changed into a prime (165158633) 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, 135664 + ... + 136875.

It is an arithmetic number, because the mean of its divisors is an integer number (20849310).

Almost surely, 2^165158634 is an apocalyptic number.

165158634 is an abundant number, since it is smaller than the sum of its proper divisors (168430326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165158634 is a wasteful number, since it uses less digits than its factorization.

165158634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272645.

The product of its digits is 86400, while the sum is 39.

The square root of 165158634 is about 12851.4059153075. The cubic root of 165158634 is about 548.6563720343.

The spelling of 165158634 in words is "one hundred sixty-five million, one hundred fifty-eight thousand, six hundred thirty-four".