1868604 has 12 divisors (see below), whose sum is σ = 4360104. Its totient is φ = 622864.

The previous prime is 1868599. The next prime is 1868617. The reversal of 1868604 is 4068681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77847 + ... + 77870.

It is an arithmetic number, because the mean of its divisors is an integer number (363342).

2^1868604 is an apocalyptic number.

It is an amenable number.

1868604 is an abundant number, since it is smaller than the sum of its proper divisors (2491500).

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

1868604 is a wasteful number, since it uses less digits than its factorization.

1868604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155724 (or 155722 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1868604 is about 1366.9689096684. The cubic root of 1868604 is about 123.1702316057.

The spelling of 1868604 in words is "one million, eight hundred sixty-eight thousand, six hundred four".