165128370 has 32 divisors (see below), whose sum is σ = 432336960. Its totient is φ = 40031040.

The previous prime is 165128363. The next prime is 165128371. The reversal of 165128370 is 73821561.

It is a super-3 number, since 3×165128370³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (165128371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249865 + ... + 250524.

It is an arithmetic number, because the mean of its divisors is an integer number (13510530).

Almost surely, 2^165128370 is an apocalyptic number.

165128370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165128370 is an abundant number, since it is smaller than the sum of its proper divisors (267208590).

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

165128370 is a wasteful number, since it uses less digits than its factorization.

165128370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500410.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 165128370 is about 12850.2284026394. The cubic root of 165128370 is about 548.6228576884.

The spelling of 165128370 in words is "one hundred sixty-five million, one hundred twenty-eight thousand, three hundred seventy".