1861444 has 12 divisors (see below), whose sum is σ = 3508204. Its totient is φ = 859104.

The previous prime is 1861417. The next prime is 1861469. The reversal of 1861444 is 4441681.

It can be written as a sum of positive squares in 2 ways, for example, as 202500 + 1658944 = 450^2 + 1288^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17847 + ... + 17950.

2^1861444 is an apocalyptic number.

It is an amenable number.

1861444 is a deficient number, since it is larger than the sum of its proper divisors (1646760).

1861444 is a wasteful number, since it uses less digits than its factorization.

1861444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35814 (or 35812 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 1861444 is about 1364.3474630753. The cubic root of 1861444 is about 123.0127115776.

The spelling of 1861444 in words is "one million, eight hundred sixty-one thousand, four hundred forty-four".