2777794991 has 2 divisors, whose sum is σ = 2777794992. Its totient is φ = 2777794990.

The previous prime is 2777794979. The next prime is 2777795029. The reversal of 2777794991 is 1994977772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2777794991 - 2¹⁴ = 2777778607 is a prime.

It is a super-2 number, since 2×2777794991² = 15432290024049380162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2777794391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388897495 + 1388897496.

It is an arithmetic number, because the mean of its divisors is an integer number (1388897496).

Almost surely, 2^2777794991 is an apocalyptic number.

2777794991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2777794991 is an equidigital number, since it uses as much as digits as its factorization.

2777794991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14002632, while the sum is 62.

The square root of 2777794991 is about 52704.7909681843. The cubic root of 2777794991 is about 1405.7240124690.

The spelling of 2777794991 in words is "two billion, seven hundred seventy-seven million, seven hundred ninety-four thousand, nine hundred ninety-one".