1868087 has 4 divisors (see below), whose sum is σ = 2011800. Its totient is φ = 1724376.

The previous prime is 1868063. The next prime is 1868107. The reversal of 1868087 is 7808681.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868087 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 1868087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868017) 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, 71837 + ... + 71862.

It is an arithmetic number, because the mean of its divisors is an integer number (502950).

2^1868087 is an apocalyptic number.

1868087 is a deficient number, since it is larger than the sum of its proper divisors (143713).

1868087 is a wasteful number, since it uses less digits than its factorization.

1868087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143712.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 1868087 is about 1366.7797920660. The cubic root of 1868087 is about 123.1588710957.

The spelling of 1868087 in words is "one million, eight hundred sixty-eight thousand, eighty-seven".