228523637 has 2 divisors, whose sum is σ = 228523638. Its totient is φ = 228523636.

The previous prime is 228523619. The next prime is 228523643. The reversal of 228523637 is 736325822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206611876 + 21911761 = 14374^2 + 4681^2 .

It is a cyclic number.

It is not a de Polignac number, because 228523637 - 2⁶ = 228523573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228523637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228523657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114261818 + 114261819.

It is an arithmetic number, because the mean of its divisors is an integer number (114261819).

Almost surely, 2^228523637 is an apocalyptic number.

It is an amenable number.

228523637 is a deficient number, since it is larger than the sum of its proper divisors (1).

228523637 is an equidigital number, since it uses as much as digits as its factorization.

228523637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 228523637 is about 15116.9982800819. The cubic root of 228523637 is about 611.3788008428.

The spelling of 228523637 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, six hundred thirty-seven".