1318474836 has 72 divisors (see below), whose sum is σ = 3851789760. Its totient is φ = 372468096.

The previous prime is 1318474777. The next prime is 1318474867. The reversal of 1318474836 is 6384748131.

It is a junction number, because it is equal to n+sod(n) for n = 1318474791 and 1318474800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6966 + ... + 51821.

It is an arithmetic number, because the mean of its divisors is an integer number (53497080).

Almost surely, 2^1318474836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318474836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1925894880).

1318474836 is an abundant number, since it is smaller than the sum of its proper divisors (2533314924).

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

1318474836 is a wasteful number, since it uses less digits than its factorization.

1318474836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58893 (or 58888 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1318474836 is about 36310.8088039911. The cubic root of 1318474836 is about 1096.5386613262.

The spelling of 1318474836 in words is "one billion, three hundred eighteen million, four hundred seventy-four thousand, eight hundred thirty-six".