189899580 has 48 divisors (see below), whose sum is σ = 572622624. Its totient is φ = 46744320.

The previous prime is 189899573. The next prime is 189899581. The reversal of 189899580 is 85998981.

189899580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 189899580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189899581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120951 + ... + 122510.

It is an arithmetic number, because the mean of its divisors is an integer number (11929638).

Almost surely, 2^189899580 is an apocalyptic number.

189899580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189899580 is an abundant number, since it is smaller than the sum of its proper divisors (382723044).

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

189899580 is a wasteful number, since it uses less digits than its factorization.

189899580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243486 (or 243484 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 57.

The square root of 189899580 is about 13780.4056544065. The cubic root of 189899580 is about 574.7884085995.

The spelling of 189899580 in words is "one hundred eighty-nine million, eight hundred ninety-nine thousand, five hundred eighty".