189840500 has 24 divisors (see below), whose sum is σ = 414612744. Its totient is φ = 75936000.

The previous prime is 189840493. The next prime is 189840517. The reversal of 189840500 is 5048981.

189840500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4553956 + 185286544 = 2134^2 + 13612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189341 + ... + 190340.

It is an arithmetic number, because the mean of its divisors is an integer number (17275531).

Almost surely, 2^189840500 is an apocalyptic number.

189840500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189840500 is an abundant number, since it is smaller than the sum of its proper divisors (224772244).

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

189840500 is a wasteful number, since it uses less digits than its factorization.

189840500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379700 (or 379688 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 189840500 is about 13778.2618642556. The cubic root of 189840500 is about 574.7287945982.

The spelling of 189840500 in words is "one hundred eighty-nine million, eight hundred forty thousand, five hundred".