2641898687 has 2 divisors, whose sum is σ = 2641898688. Its totient is φ = 2641898686.

The previous prime is 2641898671. The next prime is 2641898729. The reversal of 2641898687 is 7868981462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2641898687 - 2⁴ = 2641898671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2641898627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320949343 + 1320949344.

It is an arithmetic number, because the mean of its divisors is an integer number (1320949344).

Almost surely, 2^2641898687 is an apocalyptic number.

2641898687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641898687 is an equidigital number, since it uses as much as digits as its factorization.

2641898687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9289728, while the sum is 59.

The square root of 2641898687 is about 51399.4035665785. The cubic root of 2641898687 is about 1382.4158981874.

The spelling of 2641898687 in words is "two billion, six hundred forty-one million, eight hundred ninety-eight thousand, six hundred eighty-seven".