188498768640 has 576 divisors, whose sum is σ = 764890570752. Its totient is φ = 38486016000.

The previous prime is 188498768639. The next prime is 188498768659. The reversal of 188498768640 is 46867894881.

188498768640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10823940 + ... + 10841340.

Almost surely, 2^188498768640 is an apocalyptic number.

188498768640 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 188498768640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382445285376).

188498768640 is an abundant number, since it is smaller than the sum of its proper divisors (576391802112).

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

188498768640 is a wasteful number, since it uses less digits than its factorization.

188498768640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17476 (or 17462 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 69.

The spelling of 188498768640 in words is "one hundred eighty-eight billion, four hundred ninety-eight million, seven hundred sixty-eight thousand, six hundred forty".