161371768 has 32 divisors (see below), whose sum is σ = 306270000. Its totient is φ = 79706880.

The previous prime is 161371759. The next prime is 161371783. The reversal of 161371768 is 867173161.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 161371768.

It is a congruent number.

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, 394348 + ... + 394756.

Almost surely, 2^161371768 is an apocalyptic number.

It is an amenable number.

161371768 is a deficient number, since it is larger than the sum of its proper divisors (144898232).

161371768 is a wasteful number, since it uses less digits than its factorization.

161371768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 891 counting only the distinct ones).

The product of its digits is 42336, while the sum is 40.

The square root of 161371768 is about 12703.2188046967. The cubic root of 161371768 is about 544.4305900990.

The spelling of 161371768 in words is "one hundred sixty-one million, three hundred seventy-one thousand, seven hundred sixty-eight".