18080202228 has 48 divisors (see below), whose sum is σ = 46297972224. Its totient is φ = 5446035040.

The previous prime is 18080202197. The next prime is 18080202247. The reversal of 18080202228 is 82220208081.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388050 + ... + 432137.

It is an arithmetic number, because the mean of its divisors is an integer number (964541088).

Almost surely, 2^18080202228 is an apocalyptic number.

It is an amenable number.

18080202228 is an abundant number, since it is smaller than the sum of its proper divisors (28217769996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18080202228 is a wasteful number, since it uses less digits than its factorization.

18080202228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820372 (or 820370 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The spelling of 18080202228 in words is "eighteen billion, eighty million, two hundred two thousand, two hundred twenty-eight".