163479791 has 4 divisors (see below), whose sum is σ = 170587632. Its totient is φ = 156371952.

The previous prime is 163479779. The next prime is 163479793. The reversal of 163479791 is 197974361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163479791 - 2¹⁴ = 163463407 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 (163479793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3553886 + ... + 3553931.

It is an arithmetic number, because the mean of its divisors is an integer number (42646908).

Almost surely, 2^163479791 is an apocalyptic number.

163479791 is a deficient number, since it is larger than the sum of its proper divisors (7107841).

163479791 is an equidigital number, since it uses as much as digits as its factorization.

163479791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107840.

The product of its digits is 285768, while the sum is 47.

The square root of 163479791 is about 12785.9215936905. The cubic root of 163479791 is about 546.7910004143.

The spelling of 163479791 in words is "one hundred sixty-three million, four hundred seventy-nine thousand, seven hundred ninety-one".