161164120 has 32 divisors (see below), whose sum is σ = 390514320. Its totient is φ = 59506560.

The previous prime is 161164079. The next prime is 161164123. The reversal of 161164120 is 21461161.

161164120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161164091 and 161164100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161164123) 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, 154446 + ... + 155485.

Almost surely, 2^161164120 is an apocalyptic number.

161164120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161164120 is an abundant number, since it is smaller than the sum of its proper divisors (229350200).

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

161164120 is a wasteful number, since it uses less digits than its factorization.

161164120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309955 (or 309951 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 161164120 is about 12695.0431271422. The cubic root of 161164120 is about 544.1969712759.

The spelling of 161164120 in words is "one hundred sixty-one million, one hundred sixty-four thousand, one hundred twenty".