13159745 has 4 divisors (see below), whose sum is σ = 15791700. Its totient is φ = 10527792.

The previous prime is 13159697. The next prime is 13159747. The reversal of 13159745 is 54795131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2765569 + 10394176 = 1663^2 + 3224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13159745 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13159747) 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, 1315970 + ... + 1315979.

It is an arithmetic number, because the mean of its divisors is an integer number (3947925).

Almost surely, 2^13159745 is an apocalyptic number.

It is an amenable number.

13159745 is a deficient number, since it is larger than the sum of its proper divisors (2631955).

13159745 is an equidigital number, since it uses as much as digits as its factorization.

13159745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631954.

The product of its digits is 18900, while the sum is 35.

The square root of 13159745 is about 3627.6362827604. The cubic root of 13159745 is about 236.0926632671.

The spelling of 13159745 in words is "thirteen million, one hundred fifty-nine thousand, seven hundred forty-five".