13166913 has 4 divisors (see below), whose sum is σ = 17555888. Its totient is φ = 8777940.

The previous prime is 13166903. The next prime is 13166917. The reversal of 13166913 is 31966131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31966131 = 3 ⋅10655377.

It is not a de Polignac number, because 13166913 - 2⁴ = 13166897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13166917) 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, 2194483 + ... + 2194488.

It is an arithmetic number, because the mean of its divisors is an integer number (4388972).

Almost surely, 2^13166913 is an apocalyptic number.

It is an amenable number.

13166913 is a deficient number, since it is larger than the sum of its proper divisors (4388975).

13166913 is an equidigital number, since it uses as much as digits as its factorization.

13166913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388974.

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

The square root of 13166913 is about 3628.6241194150. The cubic root of 13166913 is about 236.1355213681.

The spelling of 13166913 in words is "thirteen million, one hundred sixty-six thousand, nine hundred thirteen".