7981495339 has 2 divisors, whose sum is σ = 7981495340. Its totient is φ = 7981495338.

The previous prime is 7981495331. The next prime is 7981495429. The reversal of 7981495339 is 9335941897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7981495339 - 2³ = 7981495331 is a prime.

It is not a weakly prime, because it can be changed into another prime (7981495331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990747669 + 3990747670.

It is an arithmetic number, because the mean of its divisors is an integer number (3990747670).

Almost surely, 2^7981495339 is an apocalyptic number.

7981495339 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981495339 is an equidigital number, since it uses as much as digits as its factorization.

7981495339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 58.

The square root of 7981495339 is about 89339.2150122218. The cubic root of 7981495339 is about 1998.4567544195.

The spelling of 7981495339 in words is "seven billion, nine hundred eighty-one million, four hundred ninety-five thousand, three hundred thirty-nine".