165115300 has 108 divisors (see below), whose sum is σ = 430639104. Its totient is φ = 54734400.

The previous prime is 165115297. The next prime is 165115309. The reversal of 165115300 is 3511561.

It is not an unprimeable number, because it can be changed into a prime (165115309) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 151357 + ... + 152443.

Almost surely, 2^165115300 is an apocalyptic number.

165115300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165115300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215319552).

165115300 is an abundant number, since it is smaller than the sum of its proper divisors (265523804).

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

165115300 is a wasteful number, since it uses less digits than its factorization.

165115300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 165115300 is about 12849.7198413039. The cubic root of 165115300 is about 548.6083827076.

Adding to 165115300 its reverse (3511561), we get a palindrome (168626861).

The spelling of 165115300 in words is "one hundred sixty-five million, one hundred fifteen thousand, three hundred".