188407385340 has 24 divisors (see below), whose sum is σ = 527540679120. Its totient is φ = 50241969408.

The previous prime is 188407385297. The next prime is 188407385347. The reversal of 188407385340 is 43583704881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188407385347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570061485 + ... + 1570061604.

It is an arithmetic number, because the mean of its divisors is an integer number (21980861630).

Almost surely, 2^188407385340 is an apocalyptic number.

188407385340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188407385340 is an abundant number, since it is smaller than the sum of its proper divisors (339133293780).

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

188407385340 is a wasteful number, since it uses less digits than its factorization.

188407385340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140123101 (or 3140123099 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 188407385340 in words is "one hundred eighty-eight billion, four hundred seven million, three hundred eighty-five thousand, three hundred forty".