161788079 has 4 divisors (see below), whose sum is σ = 162315384. Its totient is φ = 161260776.

The previous prime is 161788073. The next prime is 161788093. The reversal of 161788079 is 970887161.

161788079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161788079 - 2⁴ = 161788063 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 (161788073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263192 + ... + 263805.

It is an arithmetic number, because the mean of its divisors is an integer number (40578846).

Almost surely, 2^161788079 is an apocalyptic number.

161788079 is a deficient number, since it is larger than the sum of its proper divisors (527305).

161788079 is an equidigital number, since it uses as much as digits as its factorization.

161788079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527304.

The product of its (nonzero) digits is 169344, while the sum is 47.

The square root of 161788079 is about 12719.5942938444. The cubic root of 161788079 is about 544.8983667061.

The spelling of 161788079 in words is "one hundred sixty-one million, seven hundred eighty-eight thousand, seventy-nine".