168382947 has 4 divisors (see below), whose sum is σ = 224510600. Its totient is φ = 112255296.

The previous prime is 168382939. The next prime is 168382957. The reversal of 168382947 is 749283861.

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

It is not a de Polignac number, because 168382947 - 2³ = 168382939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168382896 and 168382905.

It is not an unprimeable number, because it can be changed into a prime (168382937) 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, 28063822 + ... + 28063827.

It is an arithmetic number, because the mean of its divisors is an integer number (56127650).

Almost surely, 2^168382947 is an apocalyptic number.

168382947 is a deficient number, since it is larger than the sum of its proper divisors (56127653).

168382947 is an equidigital number, since it uses as much as digits as its factorization.

168382947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56127652.

The product of its digits is 580608, while the sum is 48.

The square root of 168382947 is about 12976.2454893548. The cubic root of 168382947 is about 552.2037717802.

The spelling of 168382947 in words is "one hundred sixty-eight million, three hundred eighty-two thousand, nine hundred forty-seven".