2257978741 has 2 divisors, whose sum is σ = 2257978742. Its totient is φ = 2257978740.

The previous prime is 2257978721. The next prime is 2257978771. The reversal of 2257978741 is 1478797522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1640655025 + 617323716 = 40505^2 + 24846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2257978741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2257978721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128989370 + 1128989371.

It is an arithmetic number, because the mean of its divisors is an integer number (1128989371).

Almost surely, 2^2257978741 is an apocalyptic number.

It is an amenable number.

2257978741 is a deficient number, since it is larger than the sum of its proper divisors (1).

2257978741 is an equidigital number, since it uses as much as digits as its factorization.

2257978741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 52.

The square root of 2257978741 is about 47518.1937893266. The cubic root of 2257978741 is about 1311.9177747910.

The spelling of 2257978741 in words is "two billion, two hundred fifty-seven million, nine hundred seventy-eight thousand, seven hundred forty-one".