189883764 has 120 divisors (see below), whose sum is σ = 587072640. Its totient is φ = 52363584.

The previous prime is 189883747. The next prime is 189883801. The reversal of 189883764 is 467388981.

189883764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 189883764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 64329 + ... + 67215.

It is an arithmetic number, because the mean of its divisors is an integer number (4892272).

Almost surely, 2^189883764 is an apocalyptic number.

189883764 is a gapful number since it is divisible by the number (14) 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 189883764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293536320).

189883764 is an abundant number, since it is smaller than the sum of its proper divisors (397188876).

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

189883764 is a wasteful number, since it uses less digits than its factorization.

189883764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939 (or 2928 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 189883764 is about 13779.8317841692. The cubic root of 189883764 is about 574.7724508569.

The spelling of 189883764 in words is "one hundred eighty-nine million, eight hundred eighty-three thousand, seven hundred sixty-four".