161109610 has 16 divisors (see below), whose sum is σ = 290255400. Its totient is φ = 64386496.

The previous prime is 161109593. The next prime is 161109617. The reversal of 161109610 is 16901161.

161109610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 155525841 + 5583769 = 12471^2 + 2363^2 .

It is not an unprimeable number, because it can be changed into a prime (161109617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5736 + ... + 18844.

Almost surely, 2^161109610 is an apocalyptic number.

161109610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161109610 is a deficient number, since it is larger than the sum of its proper divisors (129145790).

161109610 is a wasteful number, since it uses less digits than its factorization.

161109610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14345.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 161109610 is about 12692.8960446385. The cubic root of 161109610 is about 544.1356103851.

The spelling of 161109610 in words is "one hundred sixty-one million, one hundred nine thousand, six hundred ten".