1317539983 has 2 divisors, whose sum is σ = 1317539984. Its totient is φ = 1317539982.

The previous prime is 1317539969. The next prime is 1317540013. The reversal of 1317539983 is 3899357131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1317539983 - 2²⁵ = 1283985551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317539953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658769991 + 658769992.

It is an arithmetic number, because the mean of its divisors is an integer number (658769992).

Almost surely, 2^1317539983 is an apocalyptic number.

1317539983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317539983 is an equidigital number, since it uses as much as digits as its factorization.

1317539983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 1317539983 is about 36297.9335913217. The cubic root of 1317539983 is about 1096.2794363478.

The spelling of 1317539983 in words is "one billion, three hundred seventeen million, five hundred thirty-nine thousand, nine hundred eighty-three".