1861102 has 4 divisors (see below), whose sum is σ = 2791656. Its totient is φ = 930550.

The previous prime is 1861081. The next prime is 1861103. The reversal of 1861102 is 2011681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2011681 = 7 ⋅287383.

It is a self number, because there is not a number n which added to its sum of digits gives 1861102.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465274 + ... + 465277.

It is an arithmetic number, because the mean of its divisors is an integer number (697914).

2^1861102 is an apocalyptic number.

1861102 is a deficient number, since it is larger than the sum of its proper divisors (930554).

1861102 is an equidigital number, since it uses as much as digits as its factorization.

1861102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930553.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1861102 is about 1364.2221226765. Note that the first 3 decimals coincide. The cubic root of 1861102 is about 123.0051774761.

Adding to 1861102 its reverse (2011681), we get a palindrome (3872783).

The spelling of 1861102 in words is "one million, eight hundred sixty-one thousand, one hundred two".