168115947 has 16 divisors (see below), whose sum is σ = 238318848. Its totient is φ = 105179360.

The previous prime is 168115943. The next prime is 168115967. The reversal of 168115947 is 749511861.

It is a cyclic number.

It is not a de Polignac number, because 168115947 - 2² = 168115943 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 168115899 and 168115908.

It is not an unprimeable number, because it can be changed into a prime (168115943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19329 + ... + 26642.

It is an arithmetic number, because the mean of its divisors is an integer number (14894928).

Almost surely, 2^168115947 is an apocalyptic number.

168115947 is a deficient number, since it is larger than the sum of its proper divisors (70202901).

168115947 is a wasteful number, since it uses less digits than its factorization.

168115947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46050.

The product of its digits is 60480, while the sum is 42.

The square root of 168115947 is about 12965.9533779819. The cubic root of 168115947 is about 551.9117461564.

The spelling of 168115947 in words is "one hundred sixty-eight million, one hundred fifteen thousand, nine hundred forty-seven".