1858442 has 8 divisors (see below), whose sum is σ = 2794176. Its totient is φ = 927052.

The previous prime is 1858433. The next prime is 1858459. The reversal of 1858442 is 2448581.

It is a happy number.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1858399 and 1858408.

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 3 ways as a sum of consecutive naturals, for example, 383 + ... + 1965.

It is an arithmetic number, because the mean of its divisors is an integer number (349272).

2^1858442 is an apocalyptic number.

1858442 is a deficient number, since it is larger than the sum of its proper divisors (935734).

1858442 is a wasteful number, since it uses less digits than its factorization.

1858442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

The product of its digits is 10240, while the sum is 32.

The square root of 1858442 is about 1363.2468595232. The cubic root of 1858442 is about 122.9465473782.

The spelling of 1858442 in words is "one million, eight hundred fifty-eight thousand, four hundred forty-two".