1364822257 has 2 divisors, whose sum is σ = 1364822258. Its totient is φ = 1364822256.

The previous prime is 1364822243. The next prime is 1364822267. The reversal of 1364822257 is 7522284631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1315948176 + 48874081 = 36276^2 + 6991^2 .

It is an emirp because it is prime and its reverse (7522284631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1364822257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1364822267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682411128 + 682411129.

It is an arithmetic number, because the mean of its divisors is an integer number (682411129).

Almost surely, 2^1364822257 is an apocalyptic number.

It is an amenable number.

1364822257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364822257 is an equidigital number, since it uses as much as digits as its factorization.

1364822257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 1364822257 is about 36943.5008763382. The cubic root of 1364822257 is about 1109.2395996008.

The spelling of 1364822257 in words is "one billion, three hundred sixty-four million, eight hundred twenty-two thousand, two hundred fifty-seven".