1861112 has 16 divisors (see below), whose sum is σ = 3807000. Its totient is φ = 845920.

The previous prime is 1861103. The next prime is 1861121. The reversal of 1861112 is 2111681.

It is an interprime number because it is at equal distance from previous prime (1861103) and next prime (1861121).

It is a congruent number.

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, 10487 + ... + 10662.

2^1861112 is an apocalyptic number.

It is an amenable number.

1861112 is an abundant number, since it is smaller than the sum of its proper divisors (1945888).

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

1861112 is a wasteful number, since it uses less digits than its factorization.

1861112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21166 (or 21162 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

The square root of 1861112 is about 1364.2257877639. The cubic root of 1861112 is about 123.0053977846.

Adding to 1861112 its reverse (2111681), we get a palindrome (3972793).

The spelling of 1861112 in words is "one million, eight hundred sixty-one thousand, one hundred twelve".