168364243 has 4 divisors (see below), whose sum is σ = 178268040. Its totient is φ = 158460448.

The previous prime is 168364181. The next prime is 168364249. The reversal of 168364243 is 342463861.

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 168364243 - 2²¹ = 166267091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168364249) 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, 4951873 + ... + 4951906.

It is an arithmetic number, because the mean of its divisors is an integer number (44567010).

Almost surely, 2^168364243 is an apocalyptic number.

168364243 is a deficient number, since it is larger than the sum of its proper divisors (9903797).

168364243 is an equidigital number, since it uses as much as digits as its factorization.

168364243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9903796.

The product of its digits is 82944, while the sum is 37.

The square root of 168364243 is about 12975.5247678080. The cubic root of 168364243 is about 552.1833247338.

The spelling of 168364243 in words is "one hundred sixty-eight million, three hundred sixty-four thousand, two hundred forty-three".