1368791 has 2 divisors, whose sum is σ = 1368792. Its totient is φ = 1368790.

The previous prime is 1368761. The next prime is 1368793. The reversal of 1368791 is 1978631.

It is a strong prime.

It is an emirp because it is prime and its reverse (1978631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1368791 - 2⁶ = 1368727 is a prime.

It is a Sophie Germain prime.

Together with 1368793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684395 + 684396.

It is an arithmetic number, because the mean of its divisors is an integer number (684396).

2^1368791 is an apocalyptic number.

1368791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368791 is an equidigital number, since it uses as much as digits as its factorization.

1368791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 1368791 is about 1169.9534178761. The cubic root of 1368791 is about 111.0313738655.

The spelling of 1368791 in words is "one million, three hundred sixty-eight thousand, seven hundred ninety-one".