1818369 has 24 divisors (see below), whose sum is σ = 3115840. Its totient is φ = 1038096.

The previous prime is 1818353. The next prime is 1818373. The reversal of 1818369 is 9638181.

It is not a de Polignac number, because 1818369 - 2⁴ = 1818353 is a prime.

It is a super-2 number, since 2×1818369² = 6612931640322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1818379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1167 + ... + 2235.

2^1818369 is an apocalyptic number.

It is an amenable number.

1818369 is a deficient number, since it is larger than the sum of its proper divisors (1297471).

1818369 is an equidigital number, since it uses as much as digits as its factorization.

1818369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1079 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1818369 is about 1348.4691320160. The cubic root of 1818369 is about 122.0564327295.

It can be divided in two parts, 1818 and 369, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1818369 in words is "one million, eight hundred eighteen thousand, three hundred sixty-nine".