2649913939 has 2 divisors, whose sum is σ = 2649913940. Its totient is φ = 2649913938.

The previous prime is 2649913919. The next prime is 2649913969. The reversal of 2649913939 is 9393199462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2649913939 - 2²⁵ = 2616359507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2649913939.

It is not a weakly prime, because it can be changed into another prime (2649913919) 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, 1324956969 + 1324956970.

It is an arithmetic number, because the mean of its divisors is an integer number (1324956970).

Almost surely, 2^2649913939 is an apocalyptic number.

2649913939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649913939 is an equidigital number, since it uses as much as digits as its factorization.

2649913939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2834352, while the sum is 55.

The square root of 2649913939 is about 51477.3147998223. The cubic root of 2649913939 is about 1383.8125231579.

The spelling of 2649913939 in words is "two billion, six hundred forty-nine million, nine hundred thirteen thousand, nine hundred thirty-nine".