228318158495191 has 2 divisors, whose sum is σ = 228318158495192. Its totient is φ = 228318158495190.

The previous prime is 228318158495123. The next prime is 228318158495197. The reversal of 228318158495191 is 191594851813822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228318158495191 - 2¹¹ = 228318158493143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228318158495197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114159079247595 + 114159079247596.

It is an arithmetic number, because the mean of its divisors is an integer number (114159079247596).

Almost surely, 2^{228318158495191} is an apocalyptic number.

228318158495191 is a deficient number, since it is larger than the sum of its proper divisors (1).

228318158495191 is an equidigital number, since it uses as much as digits as its factorization.

228318158495191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49766400, while the sum is 67.

The spelling of 228318158495191 in words is "two hundred twenty-eight trillion, three hundred eighteen billion, one hundred fifty-eight million, four hundred ninety-five thousand, one hundred ninety-one".