974640013 has 2 divisors, whose sum is σ = 974640014. Its totient is φ = 974640012.

The previous prime is 974639999. The next prime is 974640049. The reversal of 974640013 is 310046479.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 534395689 + 440244324 = 23117^2 + 20982^2 .

It is an emirp because it is prime and its reverse (310046479) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-974640013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974640113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487320006 + 487320007.

It is an arithmetic number, because the mean of its divisors is an integer number (487320007).

Almost surely, 2^974640013 is an apocalyptic number.

It is an amenable number.

974640013 is a deficient number, since it is larger than the sum of its proper divisors (1).

974640013 is an equidigital number, since it uses as much as digits as its factorization.

974640013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 974640013 is about 31219.2250544436. The cubic root of 974640013 is about 991.4741881105.

The spelling of 974640013 in words is "nine hundred seventy-four million, six hundred forty thousand, thirteen".