168226159 has 4 divisors (see below), whose sum is σ = 168373216. Its totient is φ = 168079104.

The previous prime is 168226153. The next prime is 168226189. The reversal of 168226159 is 951622861.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168226159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168226153) 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, 71799 + ... + 74104.

It is an arithmetic number, because the mean of its divisors is an integer number (42093304).

Almost surely, 2^168226159 is an apocalyptic number.

168226159 is a deficient number, since it is larger than the sum of its proper divisors (147057).

168226159 is a wasteful number, since it uses less digits than its factorization.

168226159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147056.

The product of its digits is 51840, while the sum is 40.

The square root of 168226159 is about 12970.2027355011. The cubic root of 168226159 is about 552.0323256554.

The spelling of 168226159 in words is "one hundred sixty-eight million, two hundred twenty-six thousand, one hundred fifty-nine".