256168093 has 2 divisors, whose sum is σ = 256168094. Its totient is φ = 256168092.

The previous prime is 256168069. The next prime is 256168103. The reversal of 256168093 is 390861652.

256168093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158810404 + 97357689 = 12602^2 + 9867^2 .

It is a cyclic number.

It is not a de Polignac number, because 256168093 - 2⁹ = 256167581 is a prime.

It is equal to p_13998226 and since 256168093 and 13998226 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256168063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128084046 + 128084047.

It is an arithmetic number, because the mean of its divisors is an integer number (128084047).

Almost surely, 2^256168093 is an apocalyptic number.

It is an amenable number.

256168093 is a deficient number, since it is larger than the sum of its proper divisors (1).

256168093 is an equidigital number, since it uses as much as digits as its factorization.

256168093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 256168093 is about 16005.2520442510. The cubic root of 256168093 is about 635.0993648627.

The spelling of 256168093 in words is "two hundred fifty-six million, one hundred sixty-eight thousand, ninety-three".