1815364 has 12 divisors (see below), whose sum is σ = 3220924. Its totient is φ = 895104.

The previous prime is 1815361. The next prime is 1815377. The reversal of 1815364 is 4635181.

It can be written as a sum of positive squares in 2 ways, for example, as 1188100 + 627264 = 1090^2 + 792^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1815361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2817 + ... + 3400.

2^1815364 is an apocalyptic number.

It is an amenable number.

1815364 is a deficient number, since it is larger than the sum of its proper divisors (1405560).

1815364 is a wasteful number, since it uses less digits than its factorization.

1815364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6294 (or 6292 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 1815364 is about 1347.3544448288. The cubic root of 1815364 is about 121.9891596567.

The spelling of 1815364 in words is "one million, eight hundred fifteen thousand, three hundred sixty-four".