188494119840 has 384 divisors, whose sum is σ = 645655836672. Its totient is φ = 45949685760.

The previous prime is 188494119829. The next prime is 188494119893. The reversal of 188494119840 is 48911494881.

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, 543210547 + ... + 543210893.

It is an arithmetic number, because the mean of its divisors is an integer number (1681395408).

Almost surely, 2^188494119840 is an apocalyptic number.

188494119840 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 188494119840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322827918336).

188494119840 is an abundant number, since it is smaller than the sum of its proper divisors (457161716832).

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

188494119840 is a wasteful number, since it uses less digits than its factorization.

188494119840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 57.

The spelling of 188494119840 in words is "one hundred eighty-eight billion, four hundred ninety-four million, one hundred nineteen thousand, eight hundred forty".