161313793 has 8 divisors (see below), whose sum is σ = 162851040. Its totient is φ = 159781440.

The previous prime is 161313773. The next prime is 161313797. The reversal of 161313793 is 397313161.

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

It is a cyclic number.

It is not a de Polignac number, because 161313793 - 2²⁵ = 127759361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161313797) 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, 107593 + ... + 109081.

It is an arithmetic number, because the mean of its divisors is an integer number (20356380).

Almost surely, 2^161313793 is an apocalyptic number.

It is an amenable number.

161313793 is a deficient number, since it is larger than the sum of its proper divisors (1537247).

161313793 is a wasteful number, since it uses less digits than its factorization.

161313793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447.

The product of its digits is 10206, while the sum is 34.

The square root of 161313793 is about 12700.9366977401. The cubic root of 161313793 is about 544.3653842610.

The spelling of 161313793 in words is "one hundred sixty-one million, three hundred thirteen thousand, seven hundred ninety-three".