13397018 has 4 divisors (see below), whose sum is σ = 20095530. Its totient is φ = 6698508.

The previous prime is 13397011. The next prime is 13397029. The reversal of 13397018 is 81079331.

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

It can be written as a sum of positive squares in only one way, i.e., 12652249 + 744769 = 3557^2 + 863^2 .

It is not an unprimeable number, because it can be changed into a prime (13397011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349253 + ... + 3349256.

Almost surely, 2^13397018 is an apocalyptic number.

13397018 is a deficient number, since it is larger than the sum of its proper divisors (6698512).

13397018 is an equidigital number, since it uses as much as digits as its factorization.

13397018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6698511.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13397018 is about 3660.1937107208. The cubic root of 13397018 is about 237.5031534207.

The spelling of 13397018 in words is "thirteen million, three hundred ninety-seven thousand, eighteen".