165742874 has 32 divisors (see below), whose sum is σ = 275982336. Its totient is φ = 74027520.

The previous prime is 165742873. The next prime is 165742883. The reversal of 165742874 is 478247561.

It is not an unprimeable number, because it can be changed into a prime (165742873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382562 + ... + 382994.

It is an arithmetic number, because the mean of its divisors is an integer number (8624448).

Almost surely, 2^165742874 is an apocalyptic number.

165742874 is a deficient number, since it is larger than the sum of its proper divisors (110239462).

165742874 is a wasteful number, since it uses less digits than its factorization.

165742874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710.

The product of its digits is 376320, while the sum is 44.

The square root of 165742874 is about 12874.1164357015. The cubic root of 165742874 is about 549.3025583893.

The spelling of 165742874 in words is "one hundred sixty-five million, seven hundred forty-two thousand, eight hundred seventy-four".