227945891 has 2 divisors, whose sum is σ = 227945892. Its totient is φ = 227945890.

The previous prime is 227945857. The next prime is 227945899. The reversal of 227945891 is 198549722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 227945891 - 2⁶ = 227945827 is a prime.

It is not a weakly prime, because it can be changed into another prime (227945899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113972945 + 113972946.

It is an arithmetic number, because the mean of its divisors is an integer number (113972946).

Almost surely, 2^227945891 is an apocalyptic number.

227945891 is a deficient number, since it is larger than the sum of its proper divisors (1).

227945891 is an equidigital number, since it uses as much as digits as its factorization.

227945891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 227945891 is about 15097.8770361929. The cubic root of 227945891 is about 610.8631433994.

The spelling of 227945891 in words is "two hundred twenty-seven million, nine hundred forty-five thousand, eight hundred ninety-one".