18861852 has 48 divisors (see below), whose sum is σ = 45868032. Its totient is φ = 6027840.

The previous prime is 18861827. The next prime is 18861881. The reversal of 18861852 is 25816881.

It is a self number, because there is not a number n which added to its sum of digits gives 18861852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29577 + ... + 30207.

It is an arithmetic number, because the mean of its divisors is an integer number (955584).

Almost surely, 2^18861852 is an apocalyptic number.

18861852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18861852 is an abundant number, since it is smaller than the sum of its proper divisors (27006180).

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

18861852 is a wasteful number, since it uses less digits than its factorization.

18861852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 736 counting only the distinct ones).

The product of its digits is 30720, while the sum is 39.

The square root of 18861852 is about 4343.0233708789. The cubic root of 18861852 is about 266.1918641391.

The spelling of 18861852 in words is "eighteen million, eight hundred sixty-one thousand, eight hundred fifty-two".