13166491 has 8 divisors (see below), whose sum is σ = 14271824. Its totient is φ = 12074400.

The previous prime is 13166479. The next prime is 13166507. The reversal of 13166491 is 19466131.

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

It is a de Polignac number, because none of the positive numbers 2^k-13166491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13166431) 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, 1185 + ... + 5266.

It is an arithmetic number, because the mean of its divisors is an integer number (1783978).

Almost surely, 2^13166491 is an apocalyptic number.

13166491 is a deficient number, since it is larger than the sum of its proper divisors (1105333).

13166491 is a wasteful number, since it uses less digits than its factorization.

13166491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621.

The product of its digits is 3888, while the sum is 31.

The square root of 13166491 is about 3628.5659701871. The cubic root of 13166491 is about 236.1329986240.

The spelling of 13166491 in words is "thirteen million, one hundred sixty-six thousand, four hundred ninety-one".