228183887 has 2 divisors, whose sum is σ = 228183888. Its totient is φ = 228183886.

The previous prime is 228183883. The next prime is 228183889. The reversal of 228183887 is 788381822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228183887 - 2² = 228183883 is a prime.

Together with 228183889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228183883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114091943 + 114091944.

It is an arithmetic number, because the mean of its divisors is an integer number (114091944).

Almost surely, 2^228183887 is an apocalyptic number.

228183887 is a deficient number, since it is larger than the sum of its proper divisors (1).

228183887 is an equidigital number, since it uses as much as digits as its factorization.

228183887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 47.

The square root of 228183887 is about 15105.7567503254. The cubic root of 228183887 is about 611.0756681287.

It can be divided in two parts, 2281 and 83887, that added together give a palindrome (86168).

The spelling of 228183887 in words is "two hundred twenty-eight million, one hundred eighty-three thousand, eight hundred eighty-seven".