161064915 has 24 divisors (see below), whose sum is σ = 283264464. Its totient is φ = 78091200.

The previous prime is 161064913. The next prime is 161064941. The reversal of 161064915 is 519460161.

It is not a de Polignac number, because 161064915 - 2¹ = 161064913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (161064913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42556 + ... + 46185.

It is an arithmetic number, because the mean of its divisors is an integer number (11802686).

Almost surely, 2^161064915 is an apocalyptic number.

161064915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161064915 is a deficient number, since it is larger than the sum of its proper divisors (122199549).

161064915 is a wasteful number, since it uses less digits than its factorization.

161064915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88771 (or 88760 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 161064915 is about 12691.1352920060. The cubic root of 161064915 is about 544.0852877291.

The spelling of 161064915 in words is "one hundred sixty-one million, sixty-four thousand, nine hundred fifteen".