10218985938 has 96 divisors (see below), whose sum is σ = 25497763200. Its totient is φ = 2897475840.

The previous prime is 10218985913. The next prime is 10218985939. The reversal of 10218985938 is 83958981201.

It is not an unprimeable number, because it can be changed into a prime (10218985939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12356281 + ... + 12357107.

It is an arithmetic number, because the mean of its divisors is an integer number (265601700).

Almost surely, 2^10218985938 is an apocalyptic number.

10218985938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10218985938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12748881600).

10218985938 is an abundant number, since it is smaller than the sum of its proper divisors (15278777262).

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

10218985938 is a wasteful number, since it uses less digits than its factorization.

10218985938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 10218985938 in words is "ten billion, two hundred eighteen million, nine hundred eighty-five thousand, nine hundred thirty-eight".