165744980 has 24 divisors (see below), whose sum is σ = 366384480. Its totient is φ = 62808480.

The previous prime is 165744979. The next prime is 165745007. The reversal of 165744980 is 89447561.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 217706 + ... + 218465.

It is an arithmetic number, because the mean of its divisors is an integer number (15266020).

Almost surely, 2^165744980 is an apocalyptic number.

165744980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165744980 is an abundant number, since it is smaller than the sum of its proper divisors (200639500).

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

165744980 is a wasteful number, since it uses less digits than its factorization.

165744980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436199 (or 436197 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 165744980 is about 12874.1982274626. The cubic root of 165744980 is about 549.3048849374.

The spelling of 165744980 in words is "one hundred sixty-five million, seven hundred forty-four thousand, nine hundred eighty".