188864780190 has 16 divisors (see below), whose sum is σ = 453275472528. Its totient is φ = 50363941376.

The previous prime is 188864780189. The next prime is 188864780197. The reversal of 188864780190 is 91087468881.

It is a happy number.

188864780190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×188864780190² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188864780197) 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, 3147746307 + ... + 3147746366.

It is an arithmetic number, because the mean of its divisors is an integer number (28329717033).

Almost surely, 2^188864780190 is an apocalyptic number.

188864780190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188864780190 is an abundant number, since it is smaller than the sum of its proper divisors (264410692338).

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

188864780190 is a wasteful number, since it uses less digits than its factorization.

188864780190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295492683.

The product of its (nonzero) digits is 6193152, while the sum is 60.

The spelling of 188864780190 in words is "one hundred eighty-eight billion, eight hundred sixty-four million, seven hundred eighty thousand, one hundred ninety".