166159747 has 8 divisors (see below), whose sum is σ = 179083520. Its totient is φ = 153256320.

The previous prime is 166159733. The next prime is 166159781. The reversal of 166159747 is 747951661.

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

It is a cyclic number.

It is not a de Polignac number, because 166159747 - 2¹⁵ = 166126979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166159697 and 166159706.

It is not an unprimeable number, because it can be changed into a prime (166159787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14779 + ... + 23467.

It is an arithmetic number, because the mean of its divisors is an integer number (22385440).

Almost surely, 2^166159747 is an apocalyptic number.

166159747 is a deficient number, since it is larger than the sum of its proper divisors (12923773).

166159747 is a wasteful number, since it uses less digits than its factorization.

166159747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173.

The product of its digits is 317520, while the sum is 46.

The square root of 166159747 is about 12890.2966218780. The cubic root of 166159747 is about 549.7627042458.

It can be divided in two parts, 16615 and 9747, that added together give a palindrome (26362).

The spelling of 166159747 in words is "one hundred sixty-six million, one hundred fifty-nine thousand, seven hundred forty-seven".