1368773191 has 2 divisors, whose sum is σ = 1368773192. Its totient is φ = 1368773190.

The previous prime is 1368773149. The next prime is 1368773213. The reversal of 1368773191 is 1913778631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368773191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368773491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684386595 + 684386596.

It is an arithmetic number, because the mean of its divisors is an integer number (684386596).

Almost surely, 2^1368773191 is an apocalyptic number.

1368773191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368773191 is an equidigital number, since it uses as much as digits as its factorization.

1368773191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 1368773191 is about 36996.9348865551. The cubic root of 1368773191 is about 1110.3089232954.

The spelling of 1368773191 in words is "one billion, three hundred sixty-eight million, seven hundred seventy-three thousand, one hundred ninety-one".