161799417 has 48 divisors (see below), whose sum is σ = 264398400. Its totient is φ = 97718400.

The previous prime is 161799413. The next prime is 161799433. The reversal of 161799417 is 714997161.

161799417 is a `hidden beast` number, since 161 + 79 + 9 + 417 = 666.

It is not a de Polignac number, because 161799417 - 2² = 161799413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161799413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268917 + ... + 269517.

It is an arithmetic number, because the mean of its divisors is an integer number (5508300).

Almost surely, 2^161799417 is an apocalyptic number.

It is an amenable number.

161799417 is a deficient number, since it is larger than the sum of its proper divisors (102598983).

161799417 is a wasteful number, since it uses less digits than its factorization.

161799417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 676 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 161799417 is about 12720.0399763523. The cubic root of 161799417 is about 544.9110951127.

The spelling of 161799417 in words is "one hundred sixty-one million, seven hundred ninety-nine thousand, four hundred seventeen".