2795778457 has 2 divisors, whose sum is σ = 2795778458. Its totient is φ = 2795778456.

The previous prime is 2795778443. The next prime is 2795778463. The reversal of 2795778457 is 7548775972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2778976656 + 16801801 = 52716^2 + 4099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2795778457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2795778395 and 2795778404.

It is not a weakly prime, because it can be changed into another prime (2795778467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1397889228 + 1397889229.

It is an arithmetic number, because the mean of its divisors is an integer number (1397889229).

Almost surely, 2^2795778457 is an apocalyptic number.

It is an amenable number.

2795778457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2795778457 is an equidigital number, since it uses as much as digits as its factorization.

2795778457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34574400, while the sum is 61.

The square root of 2795778457 is about 52875.1213426504. The cubic root of 2795778457 is about 1408.7510454915.

The spelling of 2795778457 in words is "two billion, seven hundred ninety-five million, seven hundred seventy-eight thousand, four hundred fifty-seven".