1864842 has 24 divisors (see below), whose sum is σ = 4339296. Its totient is φ = 532728.

The previous prime is 1864823. The next prime is 1864847. The reversal of 1864842 is 2484681.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1864847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2878 + ... + 3465.

It is an arithmetic number, because the mean of its divisors is an integer number (180804).

2^1864842 is an apocalyptic number.

1864842 is an abundant number, since it is smaller than the sum of its proper divisors (2474454).

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

1864842 is a wasteful number, since it uses less digits than its factorization.

1864842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6362 (or 6355 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 1864842 is about 1365.5921792395. The cubic root of 1864842 is about 123.0875178580.

The spelling of 1864842 in words is "one million, eight hundred sixty-four thousand, eight hundred forty-two".