168649147 has 4 divisors (see below), whose sum is σ = 170387896. Its totient is φ = 166910400.

The previous prime is 168649141. The next prime is 168649153. The reversal of 168649147 is 741946861.

168649147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (168649141) and next prime (168649153).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168649147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168649097 and 168649106.

It is not an unprimeable number, because it can be changed into a prime (168649141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869229 + ... + 869422.

It is an arithmetic number, because the mean of its divisors is an integer number (42596974).

Almost surely, 2^168649147 is an apocalyptic number.

168649147 is a deficient number, since it is larger than the sum of its proper divisors (1738749).

168649147 is an equidigital number, since it uses as much as digits as its factorization.

168649147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738748.

The product of its digits is 290304, while the sum is 46.

The square root of 168649147 is about 12986.4986428213. The cubic root of 168649147 is about 552.4946152639.

The spelling of 168649147 in words is "one hundred sixty-eight million, six hundred forty-nine thousand, one hundred forty-seven".