2647041391 has 2 divisors, whose sum is σ = 2647041392. Its totient is φ = 2647041390.

The previous prime is 2647041359. The next prime is 2647041401. The reversal of 2647041391 is 1931407462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2647041391 - 2⁵ = 2647041359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2647041391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2647041301) 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, 1323520695 + 1323520696.

It is an arithmetic number, because the mean of its divisors is an integer number (1323520696).

Almost surely, 2^2647041391 is an apocalyptic number.

2647041391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647041391 is an equidigital number, since it uses as much as digits as its factorization.

2647041391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 2647041391 is about 51449.4061287397. The cubic root of 2647041391 is about 1383.3123175917.

The spelling of 2647041391 in words is "two billion, six hundred forty-seven million, forty-one thousand, three hundred ninety-one".