2228478191 has 2 divisors, whose sum is σ = 2228478192. Its totient is φ = 2228478190.

The previous prime is 2228478127. The next prime is 2228478247. The reversal of 2228478191 is 1918748222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2228478191 - 2⁶ = 2228478127 is a prime.

It is a super-2 number, since 2×2228478191² = 9932230095525264962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2228478101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1114239095 + 1114239096.

It is an arithmetic number, because the mean of its divisors is an integer number (1114239096).

Almost surely, 2^2228478191 is an apocalyptic number.

2228478191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2228478191 is an equidigital number, since it uses as much as digits as its factorization.

2228478191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 2228478191 is about 47206.7600137946. The cubic root of 2228478191 is about 1306.1792975445.

The spelling of 2228478191 in words is "two billion, two hundred twenty-eight million, four hundred seventy-eight thousand, one hundred ninety-one".