13418945 has 4 divisors (see below), whose sum is σ = 16102740. Its totient is φ = 10735152.

The previous prime is 13418941. The next prime is 13418953. The reversal of 13418945 is 54981431.

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 3659569 + 9759376 = 1913^2 + 3124^2 .

It is a cyclic number.

It is not a de Polignac number, because 13418945 - 2² = 13418941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13418941) 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, 1341890 + ... + 1341899.

It is an arithmetic number, because the mean of its divisors is an integer number (4025685).

Almost surely, 2^13418945 is an apocalyptic number.

It is an amenable number.

13418945 is a deficient number, since it is larger than the sum of its proper divisors (2683795).

13418945 is an equidigital number, since it uses as much as digits as its factorization.

13418945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683794.

The product of its digits is 17280, while the sum is 35.

The square root of 13418945 is about 3663.1878193726. The cubic root of 13418945 is about 237.6326571916.

The spelling of 13418945 in words is "thirteen million, four hundred eighteen thousand, nine hundred forty-five".