2621995939 has 2 divisors, whose sum is σ = 2621995940. Its totient is φ = 2621995938.

The previous prime is 2621995897. The next prime is 2621995967. The reversal of 2621995939 is 9395991262.

2621995939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2621995939 - 2⁹ = 2621995427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2621995939.

It is not a weakly prime, because it can be changed into another prime (2621995339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310997969 + 1310997970.

It is an arithmetic number, because the mean of its divisors is an integer number (1310997970).

Almost surely, 2^2621995939 is an apocalyptic number.

2621995939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621995939 is an equidigital number, since it uses as much as digits as its factorization.

2621995939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2361960, while the sum is 55.

The square root of 2621995939 is about 51205.4288039852. The cubic root of 2621995939 is about 1378.9356665950.

The spelling of 2621995939 in words is "two billion, six hundred twenty-one million, nine hundred ninety-five thousand, nine hundred thirty-nine".