161444456 has 32 divisors (see below), whose sum is σ = 306979200. Its totient is φ = 79591680.

The previous prime is 161444447. The next prime is 161444467. The reversal of 161444456 is 654444161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244655 + ... + 245313.

It is an arithmetic number, because the mean of its divisors is an integer number (9593100).

Almost surely, 2^161444456 is an apocalyptic number.

It is an amenable number.

161444456 is a deficient number, since it is larger than the sum of its proper divisors (145534744).

161444456 is a wasteful number, since it uses less digits than its factorization.

161444456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1045 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 161444456 is about 12706.0794897561. The cubic root of 161444456 is about 544.5123219304.

The spelling of 161444456 in words is "one hundred sixty-one million, four hundred forty-four thousand, four hundred fifty-six".