188645359448 has 128 divisors (see below), whose sum is σ = 451332241920. Its totient is φ = 71930557440.

The previous prime is 188645359411. The next prime is 188645359481. The reversal of 188645359448 is 844953546881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2439311 + ... + 2515457.

It is an arithmetic number, because the mean of its divisors is an integer number (3526033140).

Almost surely, 2^188645359448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188645359448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225666120960).

188645359448 is an abundant number, since it is smaller than the sum of its proper divisors (262686882472).

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

188645359448 is a wasteful number, since it uses less digits than its factorization.

188645359448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76297 (or 76293 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 65.

The spelling of 188645359448 in words is "one hundred eighty-eight billion, six hundred forty-five million, three hundred fifty-nine thousand, four hundred forty-eight".