13195915 has 4 divisors (see below), whose sum is σ = 15835104. Its totient is φ = 10556728.

The previous prime is 13195913. The next prime is 13195967. The reversal of 13195915 is 51959131.

13195915 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.

It is a cyclic number.

It is not a de Polignac number, because 13195915 - 2¹ = 13195913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13195913) 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, 1319587 + ... + 1319596.

It is an arithmetic number, because the mean of its divisors is an integer number (3958776).

Almost surely, 2^13195915 is an apocalyptic number.

13195915 is a deficient number, since it is larger than the sum of its proper divisors (2639189).

13195915 is an equidigital number, since it uses as much as digits as its factorization.

13195915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639188.

The product of its digits is 6075, while the sum is 34.

The square root of 13195915 is about 3632.6182017933. The cubic root of 13195915 is about 236.3087682621.

The spelling of 13195915 in words is "thirteen million, one hundred ninety-five thousand, nine hundred fifteen".