1368268537 has 2 divisors, whose sum is σ = 1368268538. Its totient is φ = 1368268536.

The previous prime is 1368268507. The next prime is 1368268543. The reversal of 1368268537 is 7358628631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146228736 + 222039801 = 33856^2 + 14901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368268537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1368268507) 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, 684134268 + 684134269.

It is an arithmetic number, because the mean of its divisors is an integer number (684134269).

Almost surely, 2^1368268537 is an apocalyptic number.

It is an amenable number.

1368268537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368268537 is an equidigital number, since it uses as much as digits as its factorization.

1368268537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 1368268537 is about 36990.1140441605. The cubic root of 1368268537 is about 1110.1724529829.

The spelling of 1368268537 in words is "one billion, three hundred sixty-eight million, two hundred sixty-eight thousand, five hundred thirty-seven".