168791147 has 32 divisors (see below), whose sum is σ = 211341312. Its totient is φ = 131526144.

The previous prime is 168791143. The next prime is 168791173. The reversal of 168791147 is 741197861.

168791147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168791147 - 2² = 168791143 is a prime.

It is a Smith number, since the sum of its digits (44) 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 = 168791098 and 168791107.

It is not an unprimeable number, because it can be changed into a prime (168791143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575933 + ... + 576225.

It is an arithmetic number, because the mean of its divisors is an integer number (6604416).

Almost surely, 2^168791147 is an apocalyptic number.

168791147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

168791147 is a deficient number, since it is larger than the sum of its proper divisors (42550165).

168791147 is a wasteful number, since it uses less digits than its factorization.

168791147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467.

The product of its digits is 84672, while the sum is 44.

The square root of 168791147 is about 12991.9647090038. The cubic root of 168791147 is about 552.6496357664.

The spelling of 168791147 in words is "one hundred sixty-eight million, seven hundred ninety-one thousand, one hundred forty-seven".