166441900238 has 16 divisors (see below), whose sum is σ = 270496551600. Its totient is φ = 76504073856.

The previous prime is 166441900199. The next prime is 166441900327. The reversal of 166441900238 is 832009144661.

166441900238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56921213 + ... + 56924136.

It is an arithmetic number, because the mean of its divisors is an integer number (16906034475).

Almost surely, 2^166441900238 is an apocalyptic number.

166441900238 is a deficient number, since it is larger than the sum of its proper divisors (104054651362).

166441900238 is a wasteful number, since it uses less digits than its factorization.

166441900238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113845411.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 166441900238 in words is "one hundred sixty-six billion, four hundred forty-one million, nine hundred thousand, two hundred thirty-eight".