161792979 has 8 divisors (see below), whose sum is σ = 218323392. Its totient is φ = 106562280.

The previous prime is 161792959. The next prime is 161792987. The reversal of 161792979 is 979297161.

It is a happy number.

161792979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-161792979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161792959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324637 + ... + 325134.

It is an arithmetic number, because the mean of its divisors is an integer number (27290424).

Almost surely, 2^161792979 is an apocalyptic number.

161792979 is a deficient number, since it is larger than the sum of its proper divisors (56530413).

161792979 is an equidigital number, since it uses as much as digits as its factorization.

161792979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649857.

The product of its digits is 428652, while the sum is 51.

The square root of 161792979 is about 12719.7869085925. The cubic root of 161792979 is about 544.9038676780.

The spelling of 161792979 in words is "one hundred sixty-one million, seven hundred ninety-two thousand, nine hundred seventy-nine".