18022794000 has 320 divisors, whose sum is σ = 59373699840. Its totient is φ = 4702617600.

The previous prime is 18022793977. The next prime is 18022794011. The reversal of 18022794000 is 49722081.

It is a happy number.

It is a Cunningham number, because it is equal to 134249²-1.

It is a super-2 number, since 2×18022794000² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100685911 + ... + 100686089.

It is an arithmetic number, because the mean of its divisors is an integer number (185542812).

Almost surely, 2^18022794000 is an apocalyptic number.

18022794000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18022794000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29686849920).

18022794000 is an abundant number, since it is smaller than the sum of its proper divisors (41350905840).

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

18022794000 is a wasteful number, since it uses less digits than its factorization.

18022794000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 18022794000 in words is "eighteen billion, twenty-two million, seven hundred ninety-four thousand".