188438148 has 36 divisors (see below), whose sum is σ = 478448880. Its totient is φ = 62533296.

The previous prime is 188438111. The next prime is 188438167. The reversal of 188438148 is 841834881.

188438148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3358 + ... + 19701.

Almost surely, 2^188438148 is an apocalyptic number.

188438148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

188438148 is an abundant number, since it is smaller than the sum of its proper divisors (290010732).

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

188438148 is a wasteful number, since it uses less digits than its factorization.

188438148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23296 (or 23291 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 188438148 is about 13727.2775159534. The cubic root of 188438148 is about 573.3101214988.

The spelling of 188438148 in words is "one hundred eighty-eight million, four hundred thirty-eight thousand, one hundred forty-eight".