161608113 has 12 divisors (see below), whose sum is σ = 233547600. Its totient is φ = 107686296.

The previous prime is 161608081. The next prime is 161608127. The reversal of 161608113 is 311806161.

161608113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161608113 - 2⁵ = 161608081 is a prime.

It is a super-2 number, since 2×161608113² = 52234364374841538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161608913) 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, 26970 + ... + 32412.

It is an arithmetic number, because the mean of its divisors is an integer number (19462300).

Almost surely, 2^161608113 is an apocalyptic number.

It is an amenable number.

161608113 is a deficient number, since it is larger than the sum of its proper divisors (71939487).

161608113 is a wasteful number, since it uses less digits than its factorization.

161608113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8748 (or 8745 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 161608113 is about 12712.5179645891. The cubic root of 161608113 is about 544.6962513567.

The spelling of 161608113 in words is "one hundred sixty-one million, six hundred eight thousand, one hundred thirteen".