2778013297 has 2 divisors, whose sum is σ = 2778013298. Its totient is φ = 2778013296.

The previous prime is 2778013291. The next prime is 2778013363. The reversal of 2778013297 is 7923108772.

It is a happy number.

2778013297 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 can be written as a sum of positive squares in only one way, i.e., 2712743056 + 65270241 = 52084^2 + 8079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2778013297 - 2²⁷ = 2643795569 is a prime.

It is not a weakly prime, because it can be changed into another prime (2778013291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389006648 + 1389006649.

It is an arithmetic number, because the mean of its divisors is an integer number (1389006649).

Almost surely, 2^2778013297 is an apocalyptic number.

It is an amenable number.

2778013297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778013297 is an equidigital number, since it uses as much as digits as its factorization.

2778013297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 2778013297 is about 52706.8619536394. The cubic root of 2778013297 is about 1405.7608366345.

The spelling of 2778013297 in words is "two billion, seven hundred seventy-eight million, thirteen thousand, two hundred ninety-seven".