165165372 has 24 divisors (see below), whose sum is σ = 428206800. Its totient is φ = 55055088.

The previous prime is 165165317. The next prime is 165165397. The reversal of 165165372 is 273561561.

165165372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764547 + ... + 764762.

It is an arithmetic number, because the mean of its divisors is an integer number (17841950).

Almost surely, 2^165165372 is an apocalyptic number.

165165372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165165372 is an abundant number, since it is smaller than the sum of its proper divisors (263041428).

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

165165372 is a wasteful number, since it uses less digits than its factorization.

165165372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529322 (or 1529314 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 165165372 is about 12851.6680629403. The cubic root of 165165372 is about 548.6638331365.

The spelling of 165165372 in words is "one hundred sixty-five million, one hundred sixty-five thousand, three hundred seventy-two".