18198260498250 has 768 divisors, whose sum is σ = 57548601556992. Its totient is φ = 4064263257600.

The previous prime is 18198260498227. The next prime is 18198260498279. The reversal of 18198260498250 is 5289406289181.

18198260498250 is a `hidden beast` number, since 1 + 8 + 1 + 9 + 82 + 60 + 498 + 2 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 52444554577 + ... + 52444554923.

It is an arithmetic number, because the mean of its divisors is an integer number (74933074944).

Almost surely, 2^{18198260498250} is an apocalyptic number.

18198260498250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18198260498250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28774300778496).

18198260498250 is an abundant number, since it is smaller than the sum of its proper divisors (39350341058742).

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

18198260498250 is a wasteful number, since it uses less digits than its factorization.

18198260498250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

The spelling of 18198260498250 in words is "eighteen trillion, one hundred ninety-eight billion, two hundred sixty million, four hundred ninety-eight thousand, two hundred fifty".