161388364 has 24 divisors (see below), whose sum is σ = 297133200. Its totient is φ = 76587840.

The previous prime is 161388349. The next prime is 161388379. The reversal of 161388364 is 463883161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161388349) and next prime (161388379).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947 + ... + 18634.

It is an arithmetic number, because the mean of its divisors is an integer number (12380550).

Almost surely, 2^161388364 is an apocalyptic number.

It is an amenable number.

161388364 is a deficient number, since it is larger than the sum of its proper divisors (135744836).

161388364 is a wasteful number, since it uses less digits than its factorization.

161388364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23673 (or 23671 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 161388364 is about 12703.8720081714. The cubic root of 161388364 is about 544.4492531329.

The spelling of 161388364 in words is "one hundred sixty-one million, three hundred eighty-eight thousand, three hundred sixty-four".