228158393 has 2 divisors, whose sum is σ = 228158394. Its totient is φ = 228158392.

The previous prime is 228158389. The next prime is 228158407. The reversal of 228158393 is 393851822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200732224 + 27426169 = 14168^2 + 5237^2 .

It is a cyclic number.

It is not a de Polignac number, because 228158393 - 2² = 228158389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228158393.

It is not a weakly prime, because it can be changed into another prime (228158093) 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, 114079196 + 114079197.

It is an arithmetic number, because the mean of its divisors is an integer number (114079197).

Almost surely, 2^228158393 is an apocalyptic number.

It is an amenable number.

228158393 is a deficient number, since it is larger than the sum of its proper divisors (1).

228158393 is an equidigital number, since it uses as much as digits as its factorization.

228158393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 228158393 is about 15104.9128762797. The cubic root of 228158393 is about 611.0529096662.

The spelling of 228158393 in words is "two hundred twenty-eight million, one hundred fifty-eight thousand, three hundred ninety-three".