2791778963 has 2 divisors, whose sum is σ = 2791778964. Its totient is φ = 2791778962.

The previous prime is 2791778923. The next prime is 2791778971. The reversal of 2791778963 is 3698771972.

2791778963 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 a de Polignac number, because none of the positive numbers 2^k-2791778963 is a prime.

It is not a weakly prime, because it can be changed into another prime (2791778903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395889481 + 1395889482.

It is an arithmetic number, because the mean of its divisors is an integer number (1395889482).

Almost surely, 2^2791778963 is an apocalyptic number.

2791778963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2791778963 is an equidigital number, since it uses as much as digits as its factorization.

2791778963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8001504, while the sum is 59.

The square root of 2791778963 is about 52837.2876196347. The cubic root of 2791778963 is about 1408.0789631257.

The spelling of 2791778963 in words is "two billion, seven hundred ninety-one million, seven hundred seventy-eight thousand, nine hundred sixty-three".