256168167 has 4 divisors (see below), whose sum is σ = 341557560. Its totient is φ = 170778776.

The previous prime is 256168163. The next prime is 256168229. The reversal of 256168167 is 761861652.

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 256168167 - 2² = 256168163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256168163) 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, 42694692 + ... + 42694697.

It is an arithmetic number, because the mean of its divisors is an integer number (85389390).

Almost surely, 2^256168167 is an apocalyptic number.

256168167 is a deficient number, since it is larger than the sum of its proper divisors (85389393).

256168167 is an equidigital number, since it uses as much as digits as its factorization.

256168167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85389392.

The product of its digits is 120960, while the sum is 42.

The square root of 256168167 is about 16005.2543559920. The cubic root of 256168167 is about 635.0994260170.

The spelling of 256168167 in words is "two hundred fifty-six million, one hundred sixty-eight thousand, one hundred sixty-seven".