7864578983 has 2 divisors, whose sum is σ = 7864578984. Its totient is φ = 7864578982.

The previous prime is 7864578961. The next prime is 7864578989. The reversal of 7864578983 is 3898754687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7864578983 - 2⁸ = 7864578727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7864578989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3932289491 + 3932289492.

It is an arithmetic number, because the mean of its divisors is an integer number (3932289492).

Almost surely, 2^7864578983 is an apocalyptic number.

7864578983 is a deficient number, since it is larger than the sum of its proper divisors (1).

7864578983 is an equidigital number, since it uses as much as digits as its factorization.

7864578983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 65.

The square root of 7864578983 is about 88682.4615298876. The cubic root of 7864578983 is about 1988.6506330087.

The spelling of 7864578983 in words is "seven billion, eight hundred sixty-four million, five hundred seventy-eight thousand, nine hundred eighty-three".