188909438134 has 16 divisors (see below), whose sum is σ = 286755456960. Its totient is φ = 93330727560.

The previous prime is 188909438129. The next prime is 188909438161. The reversal of 188909438134 is 431834909881.

188909438134 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 2×188909438134² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551604 + ... + 1668919.

It is an arithmetic number, because the mean of its divisors is an integer number (17922216060).

Almost surely, 2^188909438134 is an apocalyptic number.

188909438134 is a deficient number, since it is larger than the sum of its proper divisors (97846018826).

188909438134 is a wasteful number, since it uses less digits than its factorization.

188909438134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220875.

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 188909438134 in words is "one hundred eighty-eight billion, nine hundred nine million, four hundred thirty-eight thousand, one hundred thirty-four".