2798643431 has 2 divisors, whose sum is σ = 2798643432. Its totient is φ = 2798643430.

The previous prime is 2798643373. The next prime is 2798643469. The reversal of 2798643431 is 1343468972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2798643431 is a prime.

It is a super-2 number, since 2×2798643431² = 15664810107758903522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2798640431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1399321715 + 1399321716.

It is an arithmetic number, because the mean of its divisors is an integer number (1399321716).

Almost surely, 2^2798643431 is an apocalyptic number.

2798643431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798643431 is an equidigital number, since it uses as much as digits as its factorization.

2798643431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 2798643431 is about 52902.2062961461. The cubic root of 2798643431 is about 1409.2320870954.

It can be divided in two parts, 27986 and 43431, that added together give a palindrome (71417).

The spelling of 2798643431 in words is "two billion, seven hundred ninety-eight million, six hundred forty-three thousand, four hundred thirty-one".