161404579 has 12 divisors (see below), whose sum is σ = 198801864. Its totient is φ = 130208064.

The previous prime is 161404571. The next prime is 161404583. The reversal of 161404579 is 975404161.

It is not a de Polignac number, because 161404579 - 2³ = 161404571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161404571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96049 + ... + 97714.

It is an arithmetic number, because the mean of its divisors is an integer number (16566822).

Almost surely, 2^161404579 is an apocalyptic number.

161404579 is a deficient number, since it is larger than the sum of its proper divisors (37397285).

161404579 is a wasteful number, since it uses less digits than its factorization.

161404579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193794 (or 193787 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 161404579 is about 12704.5101833955. The cubic root of 161404579 is about 544.4674864776.

The spelling of 161404579 in words is "one hundred sixty-one million, four hundred four thousand, five hundred seventy-nine".