1317485189 has 4 divisors (see below), whose sum is σ = 1320236160. Its totient is φ = 1314734220.

The previous prime is 1317485177. The next prime is 1317485201. The reversal of 1317485189 is 9815847131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1317485177) and next prime (1317485201).

It is a cyclic number.

It is not a de Polignac number, because 1317485189 - 2¹² = 1317481093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317485129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1374767 + ... + 1375724.

It is an arithmetic number, because the mean of its divisors is an integer number (330059040).

Almost surely, 2^1317485189 is an apocalyptic number.

It is an amenable number.

1317485189 is a deficient number, since it is larger than the sum of its proper divisors (2750971).

1317485189 is an equidigital number, since it uses as much as digits as its factorization.

1317485189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750970.

The product of its digits is 241920, while the sum is 47.

The square root of 1317485189 is about 36297.1788022155. The cubic root of 1317485189 is about 1096.2642387399.

The spelling of 1317485189 in words is "one billion, three hundred seventeen million, four hundred eighty-five thousand, one hundred eighty-nine".