6864198431 has 2 divisors, whose sum is σ = 6864198432. Its totient is φ = 6864198430.

The previous prime is 6864198427. The next prime is 6864198469. The reversal of 6864198431 is 1348914686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6864198431 - 2² = 6864198427 is a prime.

It is a super-2 number, since 2×6864198431² = 94234440200285723522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6864198431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6864198401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432099215 + 3432099216.

It is an arithmetic number, because the mean of its divisors is an integer number (3432099216).

Almost surely, 2^6864198431 is an apocalyptic number.

6864198431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6864198431 is an equidigital number, since it uses as much as digits as its factorization.

6864198431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 50.

The square root of 6864198431 is about 82850.4582425469. The cubic root of 6864198431 is about 1900.4798816488.

The spelling of 6864198431 in words is "six billion, eight hundred sixty-four million, one hundred ninety-eight thousand, four hundred thirty-one".