1368142771 has 2 divisors, whose sum is σ = 1368142772. Its totient is φ = 1368142770.

The previous prime is 1368142759. The next prime is 1368142793. The reversal of 1368142771 is 1772418631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368142771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1368142751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684071385 + 684071386.

It is an arithmetic number, because the mean of its divisors is an integer number (684071386).

Almost surely, 2^1368142771 is an apocalyptic number.

1368142771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368142771 is an equidigital number, since it uses as much as digits as its factorization.

1368142771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 1368142771 is about 36988.4140103357. The cubic root of 1368142771 is about 1110.1384376750.

The spelling of 1368142771 in words is "one billion, three hundred sixty-eight million, one hundred forty-two thousand, seven hundred seventy-one".