1868939 has 8 divisors (see below), whose sum is σ = 1924560. Its totient is φ = 1814176.

The previous prime is 1868917. The next prime is 1868947. The reversal of 1868939 is 9398681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868939.

It is not an unprimeable number, because it can be changed into a prime (1868989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9389 + ... + 9585.

It is an arithmetic number, because the mean of its divisors is an integer number (240570).

2^1868939 is an apocalyptic number.

1868939 is a deficient number, since it is larger than the sum of its proper divisors (55621).

1868939 is a wasteful number, since it uses less digits than its factorization.

1868939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its digits is 93312, while the sum is 44.

The square root of 1868939 is about 1367.0914380538. The cubic root of 1868939 is about 123.1775917459.

The spelling of 1868939 in words is "one million, eight hundred sixty-eight thousand, nine hundred thirty-nine".