1368294491 has 2 divisors, whose sum is σ = 1368294492. Its totient is φ = 1368294490.

The previous prime is 1368294479. The next prime is 1368294497. The reversal of 1368294491 is 1944928631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1368294491 - 2³⁰ = 294552667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1368294497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684147245 + 684147246.

It is an arithmetic number, because the mean of its divisors is an integer number (684147246).

Almost surely, 2^1368294491 is an apocalyptic number.

1368294491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368294491 is an equidigital number, since it uses as much as digits as its factorization.

1368294491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 1368294491 is about 36990.4648659624. The cubic root of 1368294491 is about 1110.1794723734.

The spelling of 1368294491 in words is "one billion, three hundred sixty-eight million, two hundred ninety-four thousand, four hundred ninety-one".