1368650497 has 2 divisors, whose sum is σ = 1368650498. Its totient is φ = 1368650496.

The previous prime is 1368650477. The next prime is 1368650519. The reversal of 1368650497 is 7940568631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1255355761 + 113294736 = 35431^2 + 10644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368650497 - 2⁷ = 1368650369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368650497.

It is not a weakly prime, because it can be changed into another prime (1368650417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684325248 + 684325249.

It is an arithmetic number, because the mean of its divisors is an integer number (684325249).

Almost surely, 2^1368650497 is an apocalyptic number.

It is an amenable number.

1368650497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368650497 is an equidigital number, since it uses as much as digits as its factorization.

1368650497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 1368650497 is about 36995.2766850040. The cubic root of 1368650497 is about 1110.2757470383.

The spelling of 1368650497 in words is "one billion, three hundred sixty-eight million, six hundred fifty thousand, four hundred ninety-seven".