1859868 has 48 divisors (see below), whose sum is σ = 5110560. Its totient is φ = 582912.

The previous prime is 1859863. The next prime is 1859881. The reversal of 1859868 is 8689581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1859863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 2342.

It is an arithmetic number, because the mean of its divisors is an integer number (106470).

2^1859868 is an apocalyptic number.

1859868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1859868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2555280).

1859868 is an abundant number, since it is smaller than the sum of its proper divisors (3250692).

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

1859868 is a wasteful number, since it uses less digits than its factorization.

1859868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1035 counting only the distinct ones).

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

The square root of 1859868 is about 1363.7697752920. The cubic root of 1859868 is about 122.9779853521.

The spelling of 1859868 in words is "one million, eight hundred fifty-nine thousand, eight hundred sixty-eight".