1368315569 has 2 divisors, whose sum is σ = 1368315570. Its totient is φ = 1368315568.

The previous prime is 1368315547. The next prime is 1368315587. The reversal of 1368315569 is 9655138631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1364563600 + 3751969 = 36940^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368315569 - 2¹² = 1368311473 is a prime.

It is a super-2 number, since 2×1368315569² = 3744574992735587522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1368315539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684157784 + 684157785.

It is an arithmetic number, because the mean of its divisors is an integer number (684157785).

Almost surely, 2^1368315569 is an apocalyptic number.

It is an amenable number.

1368315569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368315569 is an equidigital number, since it uses as much as digits as its factorization.

1368315569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 1368315569 is about 36990.7497761265. The cubic root of 1368315569 is about 1110.1851729598.

The spelling of 1368315569 in words is "one billion, three hundred sixty-eight million, three hundred fifteen thousand, five hundred sixty-nine".