165249492 has 24 divisors (see below), whose sum is σ = 389328576. Its totient is φ = 54547968.

The previous prime is 165249463. The next prime is 165249521. The reversal of 165249492 is 294942561.

It is an interprime number because it is at equal distance from previous prime (165249463) and next prime (165249521).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65613 + ... + 68084.

It is an arithmetic number, because the mean of its divisors is an integer number (16222024).

Almost surely, 2^165249492 is an apocalyptic number.

165249492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165249492 is an abundant number, since it is smaller than the sum of its proper divisors (224079084).

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

165249492 is a wasteful number, since it uses less digits than its factorization.

165249492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133807 (or 133805 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 165249492 is about 12854.9403732573. The cubic root of 165249492 is about 548.7569635707.

The spelling of 165249492 in words is "one hundred sixty-five million, two hundred forty-nine thousand, four hundred ninety-two".