18666952 has 32 divisors (see below), whose sum is σ = 38345400. Its totient is φ = 8479744.

The previous prime is 18666941. The next prime is 18666983. The reversal of 18666952 is 25966681.

18666952 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 4 ways, for example, as 15729156 + 2937796 = 3966^2 + 1714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18666899 and 18666908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578 + ... + 6310.

Almost surely, 2^18666952 is an apocalyptic number.

It is an amenable number.

18666952 is an abundant number, since it is smaller than the sum of its proper divisors (19678448).

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

18666952 is a wasteful number, since it uses less digits than its factorization.

18666952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4781 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 18666952 is about 4320.5268197293. The cubic root of 18666952 is about 265.2718321358.

The spelling of 18666952 in words is "eighteen million, six hundred sixty-six thousand, nine hundred fifty-two".