6983915489 has 2 divisors, whose sum is σ = 6983915490. Its totient is φ = 6983915488.

The previous prime is 6983915483. The next prime is 6983915527. The reversal of 6983915489 is 9845193896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3768118225 + 3215797264 = 61385^2 + 56708^2 .

It is a cyclic number.

It is not a de Polignac number, because 6983915489 - 2¹² = 6983911393 is a prime.

It is not a weakly prime, because it can be changed into another prime (6983915483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3491957744 + 3491957745.

It is an arithmetic number, because the mean of its divisors is an integer number (3491957745).

Almost surely, 2^6983915489 is an apocalyptic number.

It is an amenable number.

6983915489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6983915489 is an equidigital number, since it uses as much as digits as its factorization.

6983915489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 62.

The square root of 6983915489 is about 83569.8240335589. The cubic root of 6983915489 is about 1911.4648894715.

The spelling of 6983915489 in words is "six billion, nine hundred eighty-three million, nine hundred fifteen thousand, four hundred eighty-nine".