9090818228 has 6 divisors (see below), whose sum is σ = 15908931906. Its totient is φ = 4545409112.

The previous prime is 9090818197. The next prime is 9090818249. The reversal of 9090818228 is 8228180909.

9090818228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8220686224 + 870132004 = 90668^2 + 29498^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136352275 + ... + 1136352282.

It is an arithmetic number, because the mean of its divisors is an integer number (2651488651).

Almost surely, 2^9090818228 is an apocalyptic number.

It is an amenable number.

9090818228 is a deficient number, since it is larger than the sum of its proper divisors (6818113678).

9090818228 is a wasteful number, since it uses less digits than its factorization.

9090818228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272704561 (or 2272704559 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 9090818228 is about 95345.7824342535. The cubic root of 9090818228 is about 2087.0570690541.

The spelling of 9090818228 in words is "nine billion, ninety million, eight hundred eighteen thousand, two hundred twenty-eight".