1317801983 has 2 divisors, whose sum is σ = 1317801984. Its totient is φ = 1317801982.

The previous prime is 1317801941. The next prime is 1317802061. The reversal of 1317801983 is 3891087131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1317801983 - 2¹⁰ = 1317800959 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1317801983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317800983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658900991 + 658900992.

It is an arithmetic number, because the mean of its divisors is an integer number (658900992).

Almost surely, 2^1317801983 is an apocalyptic number.

1317801983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317801983 is an equidigital number, since it uses as much as digits as its factorization.

1317801983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1317801983 is about 36301.5424327948. The cubic root of 1317801983 is about 1096.3520985767.

The spelling of 1317801983 in words is "one billion, three hundred seventeen million, eight hundred one thousand, nine hundred eighty-three".