1866044 has 12 divisors (see below), whose sum is σ = 3276000. Its totient is φ = 930048.

The previous prime is 1866043. The next prime is 1866049. The reversal of 1866044 is 4406681.

It is a junction number, because it is equal to n+sod(n) for n = 1865998 and 1866016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (273000).

2^1866044 is an apocalyptic number.

It is an amenable number.

1866044 is a deficient number, since it is larger than the sum of its proper divisors (1409956).

1866044 is a wasteful number, since it uses less digits than its factorization.

1866044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1866044 is about 1366.0322104548. The cubic root of 1866044 is about 123.1139578853.

The spelling of 1866044 in words is "one million, eight hundred sixty-six thousand, forty-four".