18088197120 has 396 divisors, whose sum is σ = 72916907544. Its totient is φ = 4133928960.

The previous prime is 18088197109. The next prime is 18088197143. The reversal of 18088197120 is 2179188081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2253915 + ... + 2261925.

Almost surely, 2^18088197120 is an apocalyptic number.

18088197120 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 18088197120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36458453772).

18088197120 is an abundant number, since it is smaller than the sum of its proper divisors (54828710424).

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

18088197120 is a wasteful number, since it uses less digits than its factorization.

18088197120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8056 (or 8028 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The spelling of 18088197120 in words is "eighteen billion, eighty-eight million, one hundred ninety-seven thousand, one hundred twenty".