18416632 has 32 divisors (see below), whose sum is σ = 37810080. Its totient is φ = 8357760.

The previous prime is 18416617. The next prime is 18416641. The reversal of 18416632 is 23661481.

It is a happy number.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18416594 and 18416603.

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 7 ways as a sum of consecutive naturals, for example, 4893 + ... + 7795.

It is an arithmetic number, because the mean of its divisors is an integer number (1181565).

Almost surely, 2^18416632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18416632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18905040).

18416632 is an abundant number, since it is smaller than the sum of its proper divisors (19393448).

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

18416632 is a wasteful number, since it uses less digits than its factorization.

18416632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2979 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 18416632 is about 4291.4603575007. The cubic root of 18416632 is about 264.0807451208.

The spelling of 18416632 in words is "eighteen million, four hundred sixteen thousand, six hundred thirty-two".