161952738 has 8 divisors (see below), whose sum is σ = 323905488. Its totient is φ = 53984244.

The previous prime is 161952701. The next prime is 161952787. The reversal of 161952738 is 837259161.

It is a sphenic number, since it is the product of 3 distinct primes.

161952738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 161952738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13496056 + ... + 13496067.

It is an arithmetic number, because the mean of its divisors is an integer number (40488186).

Almost surely, 2^161952738 is an apocalyptic number.

161952738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161952738 is a wasteful number, since it uses less digits than its factorization.

161952738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26992128.

The product of its digits is 90720, while the sum is 42.

The square root of 161952738 is about 12726.0652992196. The cubic root of 161952738 is about 545.0831598827.

The spelling of 161952738 in words is "one hundred sixty-one million, nine hundred fifty-two thousand, seven hundred thirty-eight".