161296879 has 4 divisors (see below), whose sum is σ = 161822584. Its totient is φ = 160771176.

The previous prime is 161296873. The next prime is 161296957. The reversal of 161296879 is 978692161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161296879 - 2⁵ = 161296847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161296873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262392 + ... + 263005.

It is an arithmetic number, because the mean of its divisors is an integer number (40455646).

Almost surely, 2^161296879 is an apocalyptic number.

161296879 is a deficient number, since it is larger than the sum of its proper divisors (525705).

161296879 is an equidigital number, since it uses as much as digits as its factorization.

161296879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525704.

The product of its digits is 326592, while the sum is 49.

The square root of 161296879 is about 12700.2708238840. The cubic root of 161296879 is about 544.3463577459.

The spelling of 161296879 in words is "one hundred sixty-one million, two hundred ninety-six thousand, eight hundred seventy-nine".