7898131913 has 8 divisors (see below), whose sum is σ = 9026975232. Its totient is φ = 6769423296.

The previous prime is 7898131877. The next prime is 7898131951. The reversal of 7898131913 is 3191318987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7898131913 - 2²⁸ = 7629696457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7898131963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201281 + ... + 237297.

It is an arithmetic number, because the mean of its divisors is an integer number (1128371904).

Almost surely, 2^7898131913 is an apocalyptic number.

It is an amenable number.

7898131913 is a deficient number, since it is larger than the sum of its proper divisors (1128843319).

7898131913 is a wasteful number, since it uses less digits than its factorization.

7898131913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67351.

The product of its digits is 326592, while the sum is 50.

The square root of 7898131913 is about 88871.4347414286. The cubic root of 7898131913 is about 1991.4747040498.

The spelling of 7898131913 in words is "seven billion, eight hundred ninety-eight million, one hundred thirty-one thousand, nine hundred thirteen".