181850664 has 32 divisors (see below), whose sum is σ = 454968000. Its totient is φ = 60571392.

The previous prime is 181850651. The next prime is 181850687. The reversal of 181850664 is 466058181.

181850664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49317 + ... + 52875.

It is an arithmetic number, because the mean of its divisors is an integer number (14217750).

Almost surely, 2^181850664 is an apocalyptic number.

It is an amenable number.

181850664 is an abundant number, since it is smaller than the sum of its proper divisors (273117336).

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

181850664 is a wasteful number, since it uses less digits than its factorization.

181850664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697 (or 5693 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 181850664 is about 13485.2016670126. The cubic root of 181850664 is about 566.5500693593.

The spelling of 181850664 in words is "one hundred eighty-one million, eight hundred fifty thousand, six hundred sixty-four".