1861106 has 16 divisors (see below), whose sum is σ = 3072384. Its totient is φ = 840144.

The previous prime is 1861103. The next prime is 1861121. The reversal of 1861106 is 6011681.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1861103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (192024).

2^1861106 is an apocalyptic number.

1861106 is a deficient number, since it is larger than the sum of its proper divisors (1211278).

1861106 is a wasteful number, since it uses less digits than its factorization.

1861106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1861106 is about 1364.2235887126. The cubic root of 1861106 is about 123.0052655996.

Adding to 1861106 its reverse (6011681), we get a palindrome (7872787).

The spelling of 1861106 in words is "one million, eight hundred sixty-one thousand, one hundred six".