161163967 has 8 divisors (see below), whose sum is σ = 169384320. Its totient is φ = 153044760.

The previous prime is 161163949. The next prime is 161163979. The reversal of 161163967 is 769361161.

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

It is not a de Polignac number, because 161163967 - 2²⁷ = 26946239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161163917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22009 + ... + 28402.

It is an arithmetic number, because the mean of its divisors is an integer number (21173040).

Almost surely, 2^161163967 is an apocalyptic number.

161163967 is a deficient number, since it is larger than the sum of its proper divisors (8220353).

161163967 is a wasteful number, since it uses less digits than its factorization.

161163967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50573.

The product of its digits is 40824, while the sum is 40.

The square root of 161163967 is about 12695.0371011667. The cubic root of 161163967 is about 544.1967990660.

The spelling of 161163967 in words is "one hundred sixty-one million, one hundred sixty-three thousand, nine hundred sixty-seven".