161647113 has 8 divisors (see below), whose sum is σ = 222482176. Its totient is φ = 104288400.

The previous prime is 161647097. The next prime is 161647121. The reversal of 161647113 is 311746161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161647113 - 2⁴ = 161647097 is a prime.

It is a super-2 number, since 2×161647113² = 52259578282469538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161647163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868978 + ... + 869163.

It is an arithmetic number, because the mean of its divisors is an integer number (27810272).

Almost surely, 2^161647113 is an apocalyptic number.

It is an amenable number.

161647113 is a deficient number, since it is larger than the sum of its proper divisors (60835063).

161647113 is a wasteful number, since it uses less digits than its factorization.

161647113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738175.

The product of its digits is 3024, while the sum is 30.

The square root of 161647113 is about 12714.0517931932. The cubic root of 161647113 is about 544.7400640193.

The spelling of 161647113 in words is "one hundred sixty-one million, six hundred forty-seven thousand, one hundred thirteen".