6998115913 has 2 divisors, whose sum is σ = 6998115914. Its totient is φ = 6998115912.

The previous prime is 6998115857. The next prime is 6998115931. The reversal of 6998115913 is 3195118996.

Together with next prime (6998115931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5905615104 + 1092500809 = 76848^2 + 33053^2 .

It is a cyclic number.

It is not a de Polignac number, because 6998115913 - 2²⁵ = 6964561481 is a prime.

It is not a weakly prime, because it can be changed into another prime (6998115983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499057956 + 3499057957.

It is an arithmetic number, because the mean of its divisors is an integer number (3499057957).

Almost surely, 2^6998115913 is an apocalyptic number.

It is an amenable number.

6998115913 is a deficient number, since it is larger than the sum of its proper divisors (1).

6998115913 is an equidigital number, since it uses as much as digits as its factorization.

6998115913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 52.

The square root of 6998115913 is about 83654.7423222378. The cubic root of 6998115913 is about 1912.7595421925.

The spelling of 6998115913 in words is "six billion, nine hundred ninety-eight million, one hundred fifteen thousand, nine hundred thirteen".