2647858841 has 2 divisors, whose sum is σ = 2647858842. Its totient is φ = 2647858840.

The previous prime is 2647858813. The next prime is 2647858849. The reversal of 2647858841 is 1488587462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2524560025 + 123298816 = 50245^2 + 11104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2647858841 is a prime.

It is a super-2 number, since 2×2647858841² = 14022312883723726562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2647858849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323929420 + 1323929421.

It is an arithmetic number, because the mean of its divisors is an integer number (1323929421).

Almost surely, 2^2647858841 is an apocalyptic number.

It is an amenable number.

2647858841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647858841 is an equidigital number, since it uses as much as digits as its factorization.

2647858841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3440640, while the sum is 53.

The square root of 2647858841 is about 51457.3497277114. The cubic root of 2647858841 is about 1383.4546994822.

The spelling of 2647858841 in words is "two billion, six hundred forty-seven million, eight hundred fifty-eight thousand, eight hundred forty-one".