1318971486 has 64 divisors (see below), whose sum is σ = 3278472192. Its totient is φ = 345088512.

The previous prime is 1318971461. The next prime is 1318971499. The reversal of 1318971486 is 6841798131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1455 + ... + 51381.

It is an arithmetic number, because the mean of its divisors is an integer number (51226128).

Almost surely, 2^1318971486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318971486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639236096).

1318971486 is an abundant number, since it is smaller than the sum of its proper divisors (1959500706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318971486 is a wasteful number, since it uses less digits than its factorization.

1318971486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49993.

The product of its digits is 290304, while the sum is 48.

The square root of 1318971486 is about 36317.6470328131. The cubic root of 1318971486 is about 1096.6763273488.

The spelling of 1318971486 in words is "one billion, three hundred eighteen million, nine hundred seventy-one thousand, four hundred eighty-six".