18032166 has 16 divisors (see below), whose sum is σ = 40071600. Its totient is φ = 6010704.

The previous prime is 18032153. The next prime is 18032167. The reversal of 18032166 is 66123081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18032167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166911 + ... + 167018.

It is an arithmetic number, because the mean of its divisors is an integer number (2504475).

Almost surely, 2^18032166 is an apocalyptic number.

18032166 is an abundant number, since it is smaller than the sum of its proper divisors (22039434).

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

18032166 is a wasteful number, since it uses less digits than its factorization.

18032166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333940 (or 333934 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18032166 is about 4246.4297945451. The cubic root of 18032166 is about 262.2301553533.

It can be divided in two parts, 1803 and 2166, that added together give a square (3969 = 63²).

The spelling of 18032166 in words is "eighteen million, thirty-two thousand, one hundred sixty-six".