228671189 has 2 divisors, whose sum is σ = 228671190. Its totient is φ = 228671188.

The previous prime is 228671173. The next prime is 228671231. The reversal of 228671189 is 981176822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202066225 + 26604964 = 14215^2 + 5158^2 .

It is a cyclic number.

It is not a de Polignac number, because 228671189 - 2⁴ = 228671173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228671089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114335594 + 114335595.

It is an arithmetic number, because the mean of its divisors is an integer number (114335595).

Almost surely, 2^228671189 is an apocalyptic number.

It is an amenable number.

228671189 is a deficient number, since it is larger than the sum of its proper divisors (1).

228671189 is an equidigital number, since it uses as much as digits as its factorization.

228671189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 44.

The square root of 228671189 is about 15121.8778265135. The cubic root of 228671189 is about 611.5103565358.

The spelling of 228671189 in words is "two hundred twenty-eight million, six hundred seventy-one thousand, one hundred eighty-nine".