1318369 has 12 divisors (see below), whose sum is σ = 1482300. Its totient is φ = 1170624.

The previous prime is 1318349. The next prime is 1318379. The reversal of 1318369 is 9638131.

It can be written as a sum of positive squares in 6 ways, for example, as 471969 + 846400 = 687^2 + 920^2 .

It is not a de Polignac number, because 1318369 - 2⁷ = 1318241 is a prime.

It is a super-2 number, since 2×1318369² = 3476193640322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (3888) is a multiple of the sum of its prime factors (324).

1318369 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318369.

It is not an unprimeable number, because it can be changed into a prime (1318349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4767 + ... + 5035.

It is an arithmetic number, because the mean of its divisors is an integer number (123525).

2^1318369 is an apocalyptic number.

It is an amenable number.

1318369 is a deficient number, since it is larger than the sum of its proper divisors (163931).

1318369 is a wasteful number, since it uses less digits than its factorization.

1318369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 311 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 1318369 is about 1148.2025082711. The cubic root of 1318369 is about 109.6509320260.

The spelling of 1318369 in words is "one million, three hundred eighteen thousand, three hundred sixty-nine".