165615230 has 64 divisors (see below), whose sum is σ = 339422400. Its totient is φ = 57630720.

The previous prime is 165615221. The next prime is 165615251. The reversal of 165615230 is 32516561.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 165615193 and 165615202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615536 + ... + 615804.

It is an arithmetic number, because the mean of its divisors is an integer number (5303475).

Almost surely, 2^165615230 is an apocalyptic number.

165615230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165615230 is an abundant number, since it is smaller than the sum of its proper divisors (173807170).

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

165615230 is a wasteful number, since it uses less digits than its factorization.

165615230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 165615230 is about 12869.1580921209. The cubic root of 165615230 is about 549.1615102282.

The spelling of 165615230 in words is "one hundred sixty-five million, six hundred fifteen thousand, two hundred thirty".