13145965 has 12 divisors (see below), whose sum is σ = 18351036. Its totient is φ = 9014208.

The previous prime is 13145963. The next prime is 13145969. The reversal of 13145965 is 56954131.

It can be written as a sum of positive squares in 2 ways, for example, as 7414729 + 5731236 = 2723^2 + 2394^2 .

It is not a de Polignac number, because 13145965 - 2¹ = 13145963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13145965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145963) 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 11 ways as a sum of consecutive naturals, for example, 26584 + ... + 27073.

It is an arithmetic number, because the mean of its divisors is an integer number (1529253).

Almost surely, 2^13145965 is an apocalyptic number.

It is an amenable number.

13145965 is a deficient number, since it is larger than the sum of its proper divisors (5205071).

13145965 is an equidigital number, since it uses as much as digits as its factorization.

13145965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53676 (or 53669 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 13145965 is about 3625.7364769106. The cubic root of 13145965 is about 236.0102277000.

The spelling of 13145965 in words is "thirteen million, one hundred forty-five thousand, nine hundred sixty-five".