1868895 has 48 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 801792.

The previous prime is 1868879. The next prime is 1868917. The reversal of 1868895 is 5988681.

It is not a de Polignac number, because 1868895 - 2⁴ = 1868879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (138240) is a multiple of the sum of its prime factors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 1868895.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 5181 + ... + 5529.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2^1868895 is an apocalyptic number.

1868895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1868895 is an abundant number, since it is smaller than the sum of its proper divisors (2062305).

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

1868895 is a wasteful number, since it uses less digits than its factorization.

1868895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 381 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1868895 is about 1367.0753453998. The cubic root of 1868895 is about 123.1766250911.

The spelling of 1868895 in words is "one million, eight hundred sixty-eight thousand, eight hundred ninety-five".