7973415613 has 4 divisors (see below), whose sum is σ = 7973594428. Its totient is φ = 7973236800.

The previous prime is 7973415577. The next prime is 7973415623. The reversal of 7973415613 is 3165143797.

7973415613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3165143797 = 7853 ⋅403049.

It can be written as a sum of positive squares in 2 ways, for example, as 3223173529 + 4750242084 = 56773^2 + 68922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7973415613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7973415623) 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, 37963 + ... + 131863.

It is an arithmetic number, because the mean of its divisors is an integer number (1993398607).

Almost surely, 2^7973415613 is an apocalyptic number.

It is an amenable number.

7973415613 is a deficient number, since it is larger than the sum of its proper divisors (178815).

7973415613 is an equidigital number, since it uses as much as digits as its factorization.

7973415613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178814.

The product of its digits is 476280, while the sum is 46.

The square root of 7973415613 is about 89293.9841926655. The cubic root of 7973415613 is about 1997.7821759540.

The spelling of 7973415613 in words is "seven billion, nine hundred seventy-three million, four hundred fifteen thousand, six hundred thirteen".