2256138167 has 2 divisors, whose sum is σ = 2256138168. Its totient is φ = 2256138166.

The previous prime is 2256138151. The next prime is 2256138193. The reversal of 2256138167 is 7618316522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2256138167 - 2⁴ = 2256138151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2256138107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128069083 + 1128069084.

It is an arithmetic number, because the mean of its divisors is an integer number (1128069084).

Almost surely, 2^2256138167 is an apocalyptic number.

2256138167 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256138167 is an equidigital number, since it uses as much as digits as its factorization.

2256138167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 2256138167 is about 47498.8227959388. The cubic root of 2256138167 is about 1311.5612113296.

The spelling of 2256138167 in words is "two billion, two hundred fifty-six million, one hundred thirty-eight thousand, one hundred sixty-seven".