18861102 has 24 divisors (see below), whose sum is σ = 44009784. Its totient is φ = 5803344.

The previous prime is 18861097. The next prime is 18861121. The reversal of 18861102 is 20116881.

It is a super-4 number, since 4×18861102⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40068 + ... + 40535.

It is an arithmetic number, because the mean of its divisors is an integer number (1833741).

Almost surely, 2^18861102 is an apocalyptic number.

18861102 is an abundant number, since it is smaller than the sum of its proper divisors (25148682).

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

18861102 is a wasteful number, since it uses less digits than its factorization.

18861102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80624 (or 80621 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 18861102 is about 4342.9370246413. The cubic root of 18861102 is about 266.1883359146.

Adding to 18861102 its reverse (20116881), we get a palindrome (38977983).

The spelling of 18861102 in words is "eighteen million, eight hundred sixty-one thousand, one hundred two".