13382945 has 4 divisors (see below), whose sum is σ = 16059540. Its totient is φ = 10706352.

The previous prime is 13382939. The next prime is 13382947. The reversal of 13382945 is 54928331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54928331 = 5953 ⋅9227.

It can be written as a sum of positive squares in 2 ways, for example, as 10316944 + 3066001 = 3212^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 13382945 - 2⁶ = 13382881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13382947) 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, 1338290 + ... + 1338299.

It is an arithmetic number, because the mean of its divisors is an integer number (4014885).

Almost surely, 2^13382945 is an apocalyptic number.

It is an amenable number.

13382945 is a deficient number, since it is larger than the sum of its proper divisors (2676595).

13382945 is an equidigital number, since it uses as much as digits as its factorization.

13382945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676594.

The product of its digits is 25920, while the sum is 35.

The square root of 13382945 is about 3658.2707663594. The cubic root of 13382945 is about 237.4199619497.

The spelling of 13382945 in words is "thirteen million, three hundred eighty-two thousand, nine hundred forty-five".