1368992369 has 2 divisors, whose sum is σ = 1368992370. Its totient is φ = 1368992368.

The previous prime is 1368992363. The next prime is 1368992411. The reversal of 1368992369 is 9632998631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1098060769 + 270931600 = 33137^2 + 16460^2 .

It is an emirp because it is prime and its reverse (9632998631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1368992369 - 2¹² = 1368988273 is a prime.

It is a super-2 number, since 2×1368992369² = 3748280212760464322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1368992363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684496184 + 684496185.

It is an arithmetic number, because the mean of its divisors is an integer number (684496185).

Almost surely, 2^1368992369 is an apocalyptic number.

It is an amenable number.

1368992369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368992369 is an equidigital number, since it uses as much as digits as its factorization.

1368992369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 56.

The square root of 1368992369 is about 36999.8968782347. The cubic root of 1368992369 is about 1110.3681837345.

The spelling of 1368992369 in words is "one billion, three hundred sixty-eight million, nine hundred ninety-two thousand, three hundred sixty-nine".