18889652 has 12 divisors (see below), whose sum is σ = 35001540. Its totient is φ = 8889216.

The previous prime is 18889649. The next prime is 18889679. The reversal of 18889652 is 25698881.

It can be written as a sum of positive squares in 2 ways, for example, as 14546596 + 4343056 = 3814^2 + 2084^2 .

It is a super-2 number, since 2×18889652² = 713637905362208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18889597 and 18889606.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 138827 + ... + 138962.

It is an arithmetic number, because the mean of its divisors is an integer number (2916795).

Almost surely, 2^18889652 is an apocalyptic number.

It is an amenable number.

18889652 is a deficient number, since it is larger than the sum of its proper divisors (16111888).

18889652 is a wasteful number, since it uses less digits than its factorization.

18889652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277810 (or 277808 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 18889652 is about 4346.2227278408. Note that the first 3 decimals coincide. The cubic root of 18889652 is about 266.3225777293.

The spelling of 18889652 in words is "eighteen million, eight hundred eighty-nine thousand, six hundred fifty-two".