165015830 has 24 divisors (see below), whose sum is σ = 345523968. Its totient is φ = 56576688.

The previous prime is 165015827. The next prime is 165015839. The reversal of 165015830 is 38510561.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 165015793 and 165015802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165015839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167894 + ... + 168873.

It is an arithmetic number, because the mean of its divisors is an integer number (14396832).

Almost surely, 2^165015830 is an apocalyptic number.

165015830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165015830 is an abundant number, since it is smaller than the sum of its proper divisors (180508138).

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

165015830 is a wasteful number, since it uses less digits than its factorization.

165015830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336788 (or 336781 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 165015830 is about 12845.8487458011. The cubic root of 165015830 is about 548.4981949829.

The spelling of 165015830 in words is "one hundred sixty-five million, fifteen thousand, eight hundred thirty".