1864812 has 24 divisors (see below), whose sum is σ = 4580800. Its totient is φ = 588816.

The previous prime is 1864801. The next prime is 1864823. The reversal of 1864812 is 2184681.

It is an interprime number because it is at equal distance from previous prime (1864801) and next prime (1864823).

It is a self number, because there is not a number n which added to its sum of digits gives 1864812.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3862 + ... + 4317.

2^1864812 is an apocalyptic number.

1864812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1864812 is an abundant number, since it is smaller than the sum of its proper divisors (2715988).

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

1864812 is a wasteful number, since it uses less digits than its factorization.

1864812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205 (or 8203 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 1864812 is about 1365.5811949496. The cubic root of 1864812 is about 123.0868578118.

The spelling of 1864812 in words is "one million, eight hundred sixty-four thousand, eight hundred twelve".