228162437 has 2 divisors, whose sum is σ = 228162438. Its totient is φ = 228162436.

The previous prime is 228162421. The next prime is 228162439. The reversal of 228162437 is 734261822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178516321 + 49646116 = 13361^2 + 7046^2 .

It is a cyclic number.

It is not a de Polignac number, because 228162437 - 2⁴ = 228162421 is a prime.

Together with 228162439, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 228162397 and 228162406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228162439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114081218 + 114081219.

It is an arithmetic number, because the mean of its divisors is an integer number (114081219).

Almost surely, 2^228162437 is an apocalyptic number.

It is an amenable number.

228162437 is a deficient number, since it is larger than the sum of its proper divisors (1).

228162437 is an equidigital number, since it uses as much as digits as its factorization.

228162437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 228162437 is about 15105.0467394179. The cubic root of 228162437 is about 611.0565198532.

The spelling of 228162437 in words is "two hundred twenty-eight million, one hundred sixty-two thousand, four hundred thirty-seven".