1312841018 has 4 divisors (see below), whose sum is σ = 1969261530. Its totient is φ = 656420508.

The previous prime is 1312841003. The next prime is 1312841027. The reversal of 1312841018 is 8101482131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1218498649 + 94342369 = 34907^2 + 9713^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328210253 + ... + 328210256.

Almost surely, 2^1312841018 is an apocalyptic number.

1312841018 is a deficient number, since it is larger than the sum of its proper divisors (656420512).

1312841018 is an equidigital number, since it uses as much as digits as its factorization.

1312841018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656420511.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 1312841018 is about 36233.1480553374. The cubic root of 1312841018 is about 1094.9746018309.

The spelling of 1312841018 in words is "one billion, three hundred twelve million, eight hundred forty-one thousand, eighteen".