163916013 has 4 divisors (see below), whose sum is σ = 218554688. Its totient is φ = 109277340.

The previous prime is 163915993. The next prime is 163916063. The reversal of 163916013 is 310619361.

163916013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 163916013 - 2⁶ = 163915949 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 (163916063) 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, 27319333 + ... + 27319338.

It is an arithmetic number, because the mean of its divisors is an integer number (54638672).

Almost surely, 2^163916013 is an apocalyptic number.

It is an amenable number.

163916013 is a deficient number, since it is larger than the sum of its proper divisors (54638675).

163916013 is an equidigital number, since it uses as much as digits as its factorization.

163916013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54638674.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 163916013 is about 12802.9689134982. The cubic root of 163916013 is about 547.2769125104.

The spelling of 163916013 in words is "one hundred sixty-three million, nine hundred sixteen thousand, thirteen".