13180649 has 4 divisors (see below), whose sum is σ = 13339536. Its totient is φ = 13021764.

The previous prime is 13180637. The next prime is 13180681. The reversal of 13180649 is 94608131.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 13180649 - 2²⁰ = 12132073 is a prime.

It is a super-2 number, since 2×13180649² = 347459016122402, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13180619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79319 + ... + 79484.

It is an arithmetic number, because the mean of its divisors is an integer number (3334884).

Almost surely, 2^13180649 is an apocalyptic number.

It is an amenable number.

13180649 is a deficient number, since it is larger than the sum of its proper divisors (158887).

13180649 is an equidigital number, since it uses as much as digits as its factorization.

13180649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158886.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 13180649 is about 3630.5163544598. The cubic root of 13180649 is about 236.2176066744.

The spelling of 13180649 in words is "thirteen million, one hundred eighty thousand, six hundred forty-nine".