188969136 has 80 divisors (see below), whose sum is σ = 516157440. Its totient is φ = 59408640.

The previous prime is 188969107. The next prime is 188969147. The reversal of 188969136 is 631969881.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349026 + ... + 349566.

It is an arithmetic number, because the mean of its divisors is an integer number (6451968).

Almost surely, 2^188969136 is an apocalyptic number.

188969136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188969136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258078720).

188969136 is an abundant number, since it is smaller than the sum of its proper divisors (327188304).

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

188969136 is a wasteful number, since it uses less digits than its factorization.

188969136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 948 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 188969136 is about 13746.6045262094. The cubic root of 188969136 is about 573.8481146613.

The spelling of 188969136 in words is "one hundred eighty-eight million, nine hundred sixty-nine thousand, one hundred thirty-six".