2315955779 has 2 divisors, whose sum is σ = 2315955780. Its totient is φ = 2315955778.

The previous prime is 2315955751. The next prime is 2315955797. The reversal of 2315955779 is 9775595132.

Together with next prime (2315955797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2315955779 - 2¹² = 2315951683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2315955779.

It is not a weakly prime, because it can be changed into another prime (2315955739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157977889 + 1157977890.

It is an arithmetic number, because the mean of its divisors is an integer number (1157977890).

Almost surely, 2^2315955779 is an apocalyptic number.

2315955779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315955779 is an equidigital number, since it uses as much as digits as its factorization.

2315955779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2976750, while the sum is 53.

The square root of 2315955779 is about 48124.3782193599. The cubic root of 2315955779 is about 1323.0515144043.

The spelling of 2315955779 in words is "two billion, three hundred fifteen million, nine hundred fifty-five thousand, seven hundred seventy-nine".