1861846 has 8 divisors (see below), whose sum is σ = 3191760. Its totient is φ = 797928.

The previous prime is 1861831. The next prime is 1861859. The reversal of 1861846 is 6481681.

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

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 3 ways as a sum of consecutive naturals, for example, 66481 + ... + 66508.

It is an arithmetic number, because the mean of its divisors is an integer number (398970).

2^1861846 is an apocalyptic number.

1861846 is a deficient number, since it is larger than the sum of its proper divisors (1329914).

1861846 is a wasteful number, since it uses less digits than its factorization.

1861846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132998.

The product of its digits is 9216, while the sum is 34.

The square root of 1861846 is about 1364.4947782971. The cubic root of 1861846 is about 123.0215662715.

The spelling of 1861846 in words is "one million, eight hundred sixty-one thousand, eight hundred forty-six".