18506632 has 16 divisors (see below), whose sum is σ = 34966800. Its totient is φ = 9182160.

The previous prime is 18506617. The next prime is 18506639. The reversal of 18506632 is 23660581.

It is a junction number, because it is equal to n+sod(n) for n = 18506594 and 18506603.

It is not an unprimeable number, because it can be changed into a prime (18506639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7782 + ... + 9877.

It is an arithmetic number, because the mean of its divisors is an integer number (2185425).

Almost surely, 2^18506632 is an apocalyptic number.

It is an amenable number.

18506632 is a deficient number, since it is larger than the sum of its proper divisors (16460168).

18506632 is a wasteful number, since it uses less digits than its factorization.

18506632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17796 (or 17792 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 18506632 is about 4301.9335187797. The cubic root of 18506632 is about 264.5102238631.

The spelling of 18506632 in words is "eighteen million, five hundred six thousand, six hundred thirty-two".