1368939499 has 2 divisors, whose sum is σ = 1368939500. Its totient is φ = 1368939498.

The previous prime is 1368939497. The next prime is 1368939589. The reversal of 1368939499 is 9949398631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1368939499 - 2¹ = 1368939497 is a prime.

Together with 1368939497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1368939497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684469749 + 684469750.

It is an arithmetic number, because the mean of its divisors is an integer number (684469750).

Almost surely, 2^1368939499 is an apocalyptic number.

1368939499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368939499 is an equidigital number, since it uses as much as digits as its factorization.

1368939499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11337408, while the sum is 61.

The square root of 1368939499 is about 36999.1824098858. The cubic root of 1368939499 is about 1110.3538895419.

The spelling of 1368939499 in words is "one billion, three hundred sixty-eight million, nine hundred thirty-nine thousand, four hundred ninety-nine".