1317301918 has 4 divisors (see below), whose sum is σ = 1975952880. Its totient is φ = 658650958.

The previous prime is 1317301859. The next prime is 1317301919. The reversal of 1317301918 is 8191037131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8191037131 = 131 ⋅62527001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317301919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329325478 + ... + 329325481.

It is an arithmetic number, because the mean of its divisors is an integer number (493988220).

Almost surely, 2^1317301918 is an apocalyptic number.

1317301918 is a deficient number, since it is larger than the sum of its proper divisors (658650962).

1317301918 is an equidigital number, since it uses as much as digits as its factorization.

1317301918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658650961.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1317301918 is about 36294.6541242646. The cubic root of 1317301918 is about 1096.2134038205.

The spelling of 1317301918 in words is "one billion, three hundred seventeen million, three hundred one thousand, nine hundred eighteen".