165461860 has 24 divisors (see below), whose sum is σ = 352658880. Its totient is φ = 65196384.

The previous prime is 165461837. The next prime is 165461897. The reversal of 165461860 is 68164561.

It is a super-2 number, since 2×165461860² = 54755254229319200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60400 + ... + 63079.

It is an arithmetic number, because the mean of its divisors is an integer number (14694120).

Almost surely, 2^165461860 is an apocalyptic number.

165461860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165461860 is an abundant number, since it is smaller than the sum of its proper divisors (187197020).

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

165461860 is a wasteful number, since it uses less digits than its factorization.

165461860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123555 (or 123553 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 165461860 is about 12863.1978916598. The cubic root of 165461860 is about 548.9919386387.

The spelling of 165461860 in words is "one hundred sixty-five million, four hundred sixty-one thousand, eight hundred sixty".