256188043 has 2 divisors, whose sum is σ = 256188044. Its totient is φ = 256188042.

The previous prime is 256188029. The next prime is 256188071. The reversal of 256188043 is 340881652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256188043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256187993 and 256188011.

It is not a weakly prime, because it can be changed into another prime (256188143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128094021 + 128094022.

It is an arithmetic number, because the mean of its divisors is an integer number (128094022).

Almost surely, 2^256188043 is an apocalyptic number.

256188043 is a deficient number, since it is larger than the sum of its proper divisors (1).

256188043 is an equidigital number, since it uses as much as digits as its factorization.

256188043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 256188043 is about 16005.8752650394. The cubic root of 256188043 is about 635.1158513075.

The spelling of 256188043 in words is "two hundred fifty-six million, one hundred eighty-eight thousand, forty-three".