1868781112 has 48 divisors (see below), whose sum is σ = 3984334200. Its totient is φ = 820142400.

The previous prime is 1868781097. The next prime is 1868781133. The reversal of 1868781112 is 2111878681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5214 + ... + 61357.

Almost surely, 2^1868781112 is an apocalyptic number.

It is an amenable number.

1868781112 is an abundant number, since it is smaller than the sum of its proper divisors (2115553088).

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

1868781112 is a wasteful number, since it uses less digits than its factorization.

1868781112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66628 (or 66613 counting only the distinct ones).

The product of its digits is 43008, while the sum is 43.

The square root of 1868781112 is about 43229.4010136620. The cubic root of 1868781112 is about 1231.7412296651.

It can be divided in two parts, 18687 and 81112, that added together give a palindrome (99799).

The spelling of 1868781112 in words is "one billion, eight hundred sixty-eight million, seven hundred eighty-one thousand, one hundred twelve".