189007992 has 120 divisors (see below), whose sum is σ = 552166560. Its totient is φ = 60341760.

The previous prime is 189007963. The next prime is 189008003. The reversal of 189007992 is 299700981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1948488 + ... + 1948584.

It is an arithmetic number, because the mean of its divisors is an integer number (4601388).

Almost surely, 2^189007992 is an apocalyptic number.

189007992 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 189007992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276083280).

189007992 is an abundant number, since it is smaller than the sum of its proper divisors (363158568).

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

189007992 is an equidigital number, since it uses as much as digits as its factorization.

189007992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 189007992 is about 13748.0177480246. The cubic root of 189007992 is about 573.8874436838.

The spelling of 189007992 in words is "one hundred eighty-nine million, seven thousand, nine hundred ninety-two".