18228177068 has 6 divisors (see below), whose sum is σ = 31899309876. Its totient is φ = 9114088532.

The previous prime is 18228177061. The next prime is 18228177073. The reversal of 18228177068 is 86077182281.

It is a super-2 number, since 2×18228177068² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18228177061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2278522130 + ... + 2278522137.

It is an arithmetic number, because the mean of its divisors is an integer number (5316551646).

Almost surely, 2^18228177068 is an apocalyptic number.

It is an amenable number.

18228177068 is a deficient number, since it is larger than the sum of its proper divisors (13671132808).

18228177068 is a wasteful number, since it uses less digits than its factorization.

18228177068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557044271 (or 4557044269 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 18228177068 in words is "eighteen billion, two hundred twenty-eight million, one hundred seventy-seven thousand, sixty-eight".