2779138963 has 2 divisors, whose sum is σ = 2779138964. Its totient is φ = 2779138962.

The previous prime is 2779138939. The next prime is 2779139003. The reversal of 2779138963 is 3698319772.

It is a happy number.

2779138963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2779138963 - 2⁹ = 2779138451 is a prime.

It is a super-2 number, since 2×2779138963² = 15447226751329430738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2779138913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389569481 + 1389569482.

It is an arithmetic number, because the mean of its divisors is an integer number (1389569482).

Almost surely, 2^2779138963 is an apocalyptic number.

2779138963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779138963 is an equidigital number, since it uses as much as digits as its factorization.

2779138963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The square root of 2779138963 is about 52717.5394247493. The cubic root of 2779138963 is about 1405.9506849568.

The spelling of 2779138963 in words is "two billion, seven hundred seventy-nine million, one hundred thirty-eight thousand, nine hundred sixty-three".