168182047 has 4 divisors (see below), whose sum is σ = 183471336. Its totient is φ = 152892760.

The previous prime is 168182039. The next prime is 168182051. The reversal of 168182047 is 740281861.

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

It is a cyclic number.

It is not a de Polignac number, because 168182047 - 2³ = 168182039 is a prime.

It is a super-2 number, since 2×168182047² = 56570401866220418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168181997 and 168182015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168182087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7644628 + ... + 7644649.

It is an arithmetic number, because the mean of its divisors is an integer number (45867834).

Almost surely, 2^168182047 is an apocalyptic number.

168182047 is a deficient number, since it is larger than the sum of its proper divisors (15289289).

168182047 is a wasteful number, since it uses less digits than its factorization.

168182047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15289288.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 168182047 is about 12968.5021108839. The cubic root of 168182047 is about 551.9840704200.

The spelling of 168182047 in words is "one hundred sixty-eight million, one hundred eighty-two thousand, forty-seven".