188980992 has 144 divisors (see below), whose sum is σ = 588672000. Its totient is φ = 59636736.

The previous prime is 188980969. The next prime is 188981003. The reversal of 188980992 is 299089881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 130609 + ... + 132047.

It is an arithmetic number, because the mean of its divisors is an integer number (4088000).

Almost surely, 2^188980992 is an apocalyptic number.

188980992 is a gapful number since it is divisible by the number (12) 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 188980992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294336000).

188980992 is an abundant number, since it is smaller than the sum of its proper divisors (399691008).

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

188980992 is a wasteful number, since it uses less digits than its factorization.

188980992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The square root of 188980992 is about 13747.0357532088. The cubic root of 188980992 is about 573.8601155645.

The spelling of 188980992 in words is "one hundred eighty-eight million, nine hundred eighty thousand, nine hundred ninety-two".