13017938 has 4 divisors (see below), whose sum is σ = 19526910. Its totient is φ = 6508968.

The previous prime is 13017929. The next prime is 13017947. The reversal of 13017938 is 83971031.

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

It is an interprime number because it is at equal distance from previous prime (13017929) and next prime (13017947).

It can be written as a sum of positive squares in only one way, i.e., 11950849 + 1067089 = 3457^2 + 1033^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

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, 3254483 + ... + 3254486.

Almost surely, 2^13017938 is an apocalyptic number.

13017938 is a deficient number, since it is larger than the sum of its proper divisors (6508972).

13017938 is an equidigital number, since it uses as much as digits as its factorization.

13017938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508971.

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

The square root of 13017938 is about 3608.0379709754. The cubic root of 13017938 is about 235.2415684045.

Adding to 13017938 its reverse (83971031), we get a palindrome (96988969).

The spelling of 13017938 in words is "thirteen million, seventeen thousand, nine hundred thirty-eight".