1318725986 has 8 divisors (see below), whose sum is σ = 2003128320. Its totient is φ = 651016548.

The previous prime is 1318725983. The next prime is 1318726001. The reversal of 1318725986 is 6895278131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1318725983) 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, 4173026 + ... + 4173341.

It is an arithmetic number, because the mean of its divisors is an integer number (250391040).

Almost surely, 2^1318725986 is an apocalyptic number.

1318725986 is a deficient number, since it is larger than the sum of its proper divisors (684402334).

1318725986 is an equidigital number, since it uses as much as digits as its factorization.

1318725986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346448.

The product of its digits is 725760, while the sum is 50.

The square root of 1318725986 is about 36314.2669759421. The cubic root of 1318725986 is about 1096.6082817170.

The spelling of 1318725986 in words is "one billion, three hundred eighteen million, seven hundred twenty-five thousand, nine hundred eighty-six".