228653356889 has 2 divisors, whose sum is σ = 228653356890. Its totient is φ = 228653356888.

The previous prime is 228653356793. The next prime is 228653356903. The reversal of 228653356889 is 988653356822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173562225664 + 55091131225 = 416608^2 + 234715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228653356889 is a prime.

It is a super-4 number, since 4×228653356889⁴ (a number of 47 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (228653350889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114326678444 + 114326678445.

It is an arithmetic number, because the mean of its divisors is an integer number (114326678445).

Almost surely, 2^228653356889 is an apocalyptic number.

It is an amenable number.

228653356889 is a deficient number, since it is larger than the sum of its proper divisors (1).

228653356889 is an equidigital number, since it uses as much as digits as its factorization.

228653356889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 149299200, while the sum is 65.

The spelling of 228653356889 in words is "two hundred twenty-eight billion, six hundred fifty-three million, three hundred fifty-six thousand, eight hundred eighty-nine".