166387912 has 16 divisors (see below), whose sum is σ = 322041600. Its totient is φ = 80510160.

The previous prime is 166387901. The next prime is 166387919. The reversal of 166387912 is 219783661.

166387912 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166387919) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 335212 + ... + 335707.

It is an arithmetic number, because the mean of its divisors is an integer number (20127600).

Almost surely, 2^166387912 is an apocalyptic number.

It is an amenable number.

166387912 is a deficient number, since it is larger than the sum of its proper divisors (155653688).

166387912 is a wasteful number, since it uses less digits than its factorization.

166387912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670956 (or 670952 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 166387912 is about 12899.1438475583. The cubic root of 166387912 is about 550.0142277311.

The spelling of 166387912 in words is "one hundred sixty-six million, three hundred eighty-seven thousand, nine hundred twelve".