161180864 has 28 divisors (see below), whose sum is σ = 344448384. Its totient is φ = 74390784.

The previous prime is 161180839. The next prime is 161180879. The reversal of 161180864 is 468081161.

It is a happy number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96032 + ... + 97695.

It is an arithmetic number, because the mean of its divisors is an integer number (12301728).

Almost surely, 2^161180864 is an apocalyptic number.

It is an amenable number.

161180864 is an abundant number, since it is smaller than the sum of its proper divisors (183267520).

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

161180864 is a wasteful number, since it uses less digits than its factorization.

161180864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193752 (or 193742 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 161180864 is about 12695.7025800071. The cubic root of 161180864 is about 544.2158169068.

The spelling of 161180864 in words is "one hundred sixty-one million, one hundred eighty thousand, eight hundred sixty-four".