2651381839 has 2 divisors, whose sum is σ = 2651381840. Its totient is φ = 2651381838.

The previous prime is 2651381819. The next prime is 2651381881. The reversal of 2651381839 is 9381831562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2651381839 - 2⁵ = 2651381807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2651381819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325690919 + 1325690920.

It is an arithmetic number, because the mean of its divisors is an integer number (1325690920).

Almost surely, 2^2651381839 is an apocalyptic number.

2651381839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2651381839 is an equidigital number, since it uses as much as digits as its factorization.

2651381839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 2651381839 is about 51491.5705625688. The cubic root of 2651381839 is about 1384.0679935230.

The spelling of 2651381839 in words is "two billion, six hundred fifty-one million, three hundred eighty-one thousand, eight hundred thirty-nine".