228175613 has 2 divisors, whose sum is σ = 228175614. Its totient is φ = 228175612.

The previous prime is 228175603. The next prime is 228175627. The reversal of 228175613 is 316571822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219573124 + 8602489 = 14818^2 + 2933^2 .

It is a cyclic number.

It is not a de Polignac number, because 228175613 - 2¹⁰ = 228174589 is a prime.

It is a super-2 number, since 2×228175613² = 104128220735851538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228175603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114087806 + 114087807.

It is an arithmetic number, because the mean of its divisors is an integer number (114087807).

Almost surely, 2^228175613 is an apocalyptic number.

It is an amenable number.

228175613 is a deficient number, since it is larger than the sum of its proper divisors (1).

228175613 is an equidigital number, since it uses as much as digits as its factorization.

228175613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 228175613 is about 15105.4828787431. The cubic root of 228175613 is about 611.0682821249.

The spelling of 228175613 in words is "two hundred twenty-eight million, one hundred seventy-five thousand, six hundred thirteen".