18621852 has 24 divisors (see below), whose sum is σ = 43860096. Its totient is φ = 6148848.

The previous prime is 18621847. The next prime is 18621853. The reversal of 18621852 is 25812681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18621853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5968 + ... + 8535.

It is an arithmetic number, because the mean of its divisors is an integer number (1827504).

Almost surely, 2^18621852 is an apocalyptic number.

18621852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18621852 is an abundant number, since it is smaller than the sum of its proper divisors (25238244).

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

18621852 is a wasteful number, since it uses less digits than its factorization.

18621852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14617 (or 14615 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 18621852 is about 4315.3043925081. The cubic root of 18621852 is about 265.0580245552.

The spelling of 18621852 in words is "eighteen million, six hundred twenty-one thousand, eight hundred fifty-two".