20228018929 has 2 divisors, whose sum is σ = 20228018930. Its totient is φ = 20228018928.

The previous prime is 20228018927. The next prime is 20228018933. The reversal of 20228018929 is 92981082202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18663658225 + 1564360704 = 136615^2 + 39552^2 .

It is a cyclic number.

It is not a de Polignac number, because 20228018929 - 2¹ = 20228018927 is a prime.

Together with 20228018927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20228018927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10114009464 + 10114009465.

It is an arithmetic number, because the mean of its divisors is an integer number (10114009465).

Almost surely, 2^20228018929 is an apocalyptic number.

It is an amenable number.

20228018929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20228018929 is an equidigital number, since it uses as much as digits as its factorization.

20228018929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 20228018929 in words is "twenty billion, two hundred twenty-eight million, eighteen thousand, nine hundred twenty-nine".