166713738 has 8 divisors (see below), whose sum is σ = 333427488. Its totient is φ = 55571244.

The previous prime is 166713737. The next prime is 166713761. The reversal of 166713738 is 837317661.

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

166713738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 166713738.

It is not an unprimeable number, because it can be changed into a prime (166713737) 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, 13892806 + ... + 13892817.

It is an arithmetic number, because the mean of its divisors is an integer number (41678436).

Almost surely, 2^166713738 is an apocalyptic number.

166713738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166713738 is a wasteful number, since it uses less digits than its factorization.

166713738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27785628.

The product of its digits is 127008, while the sum is 42.

The square root of 166713738 is about 12911.7674235559. The cubic root of 166713738 is about 550.3730119785.

The spelling of 166713738 in words is "one hundred sixty-six million, seven hundred thirteen thousand, seven hundred thirty-eight".