166905338 has 8 divisors (see below), whose sum is σ = 250423488. Its totient is φ = 83430844.

The previous prime is 166905331. The next prime is 166905373. The reversal of 166905338 is 833509661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 166905295 and 166905304.

It is not an unprimeable number, because it can be changed into a prime (166905331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445 + ... + 18327.

It is an arithmetic number, because the mean of its divisors is an integer number (31302936).

Almost surely, 2^166905338 is an apocalyptic number.

166905338 is a deficient number, since it is larger than the sum of its proper divisors (83518150).

166905338 is a wasteful number, since it uses less digits than its factorization.

166905338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21828.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 166905338 is about 12919.1848814080. The cubic root of 166905338 is about 550.5837746478.

The spelling of 166905338 in words is "one hundred sixty-six million, nine hundred five thousand, three hundred thirty-eight".