1865798 has 8 divisors (see below), whose sum is σ = 3053160. Its totient is φ = 848080.

The previous prime is 1865791. The next prime is 1865821. The reversal of 1865798 is 8975681.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1865791) 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, 42383 + ... + 42426.

It is an arithmetic number, because the mean of its divisors is an integer number (381645).

2^1865798 is an apocalyptic number.

1865798 is a deficient number, since it is larger than the sum of its proper divisors (1187362).

1865798 is a wasteful number, since it uses less digits than its factorization.

1865798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84822.

The product of its digits is 120960, while the sum is 44.

The square root of 1865798 is about 1365.9421656864. The cubic root of 1865798 is about 123.1085476226.

The spelling of 1865798 in words is "one million, eight hundred sixty-five thousand, seven hundred ninety-eight".