1318826256 has 160 divisors (see below), whose sum is σ = 3912606720. Its totient is φ = 378892800.

The previous prime is 1318826239. The next prime is 1318826269. The reversal of 1318826256 is 6526288131.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 1590450 + ... + 1591278.

It is an arithmetic number, because the mean of its divisors is an integer number (24453792).

Almost surely, 2^1318826256 is an apocalyptic number.

1318826256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318826256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956303360).

1318826256 is an abundant number, since it is smaller than the sum of its proper divisors (2593780464).

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

1318826256 is a wasteful number, since it uses less digits than its factorization.

1318826256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 999 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 1318826256 is about 36315.6475365647. The cubic root of 1318826256 is about 1096.6360747352.

The spelling of 1318826256 in words is "one billion, three hundred eighteen million, eight hundred twenty-six thousand, two hundred fifty-six".