1318864 has 20 divisors (see below), whose sum is σ = 2638720. Its totient is φ = 637920.

The previous prime is 1318861. The next prime is 1318879. The reversal of 1318864 is 4688131.

1318864 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318861) 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, 834 + ... + 1825.

It is an arithmetic number, because the mean of its divisors is an integer number (131936).

2^1318864 is an apocalyptic number.

It is an amenable number.

1318864 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1318864 is a wasteful number, since it uses less digits than its factorization.

1318864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698 (or 2692 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 1318864 is about 1148.4180423522. The cubic root of 1318864 is about 109.6646536320.

The spelling of 1318864 in words is "one million, three hundred eighteen thousand, eight hundred sixty-four".