1864836 has 48 divisors (see below), whose sum is σ = 4999680. Its totient is φ = 600480.

The previous prime is 1864823. The next prime is 1864847. The reversal of 1864836 is 6384681.

It is a happy number.

1864836 is a `hidden beast` number, since 1 + 8 + 648 + 3 + 6 = 666.

It is a super-2 number, since 2×1864836² = 6955226613792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1864836.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (104160).

2^1864836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1864836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2499840).

1864836 is an abundant number, since it is smaller than the sum of its proper divisors (3134844).

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

1864836 is a wasteful number, since it uses less digits than its factorization.

1864836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 593 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1864836 is about 1365.5899823886. The cubic root of 1864836 is about 123.0873858493.

The spelling of 1864836 in words is "one million, eight hundred sixty-four thousand, eight hundred thirty-six".