1866338 has 8 divisors (see below), whose sum is σ = 2833488. Its totient is φ = 921844.

The previous prime is 1866331. The next prime is 1866341. The reversal of 1866338 is 8336681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1866298 and 1866307.

It is not an unprimeable number, because it can be changed into a prime (1866331) 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, 5456 + ... + 5787.

It is an arithmetic number, because the mean of its divisors is an integer number (354186).

2^1866338 is an apocalyptic number.

1866338 is a deficient number, since it is larger than the sum of its proper divisors (967150).

1866338 is a wasteful number, since it uses less digits than its factorization.

1866338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11328.

The product of its digits is 20736, while the sum is 35.

The square root of 1866338 is about 1366.1398171490. The cubic root of 1866338 is about 123.1204231853.

The spelling of 1866338 in words is "one million, eight hundred sixty-six thousand, three hundred thirty-eight".