165749814 has 28 divisors (see below), whose sum is σ = 372769836. Its totient is φ = 55249452.

The previous prime is 165749803. The next prime is 165749849. The reversal of 165749814 is 418947561.

It is a self number, because there is not a number n which added to its sum of digits gives 165749814.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 55384 + ... + 58299.

Almost surely, 2^165749814 is an apocalyptic number.

165749814 is an abundant number, since it is smaller than the sum of its proper divisors (207020022).

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

165749814 is an equidigital number, since it uses as much as digits as its factorization.

165749814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113703 (or 113688 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 165749814 is about 12874.3859659403. The cubic root of 165749814 is about 549.3102250971.

The spelling of 165749814 in words is "one hundred sixty-five million, seven hundred forty-nine thousand, eight hundred fourteen".