161161610 has 32 divisors (see below), whose sum is σ = 307186560. Its totient is φ = 60706368.

The previous prime is 161161607. The next prime is 161161619. The reversal of 161161610 is 16161161.

161161610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161161619) 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, 30419 + ... + 35321.

It is an arithmetic number, because the mean of its divisors is an integer number (9599580).

Almost surely, 2^161161610 is an apocalyptic number.

161161610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161161610 is a deficient number, since it is larger than the sum of its proper divisors (146024950).

161161610 is a wasteful number, since it uses less digits than its factorization.

161161610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 161161610 is about 12694.9442692751. The cubic root of 161161610 is about 544.1941461196.

The spelling of 161161610 in words is "one hundred sixty-one million, one hundred sixty-one thousand, six hundred ten".