189019950 has 72 divisors (see below), whose sum is σ = 545324472. Its totient is φ = 43202880.

The previous prime is 189019937. The next prime is 189019969. The reversal of 189019950 is 59910981.

189019950 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 (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5509 + ... + 20208.

It is an arithmetic number, because the mean of its divisors is an integer number (7573951).

Almost surely, 2^189019950 is an apocalyptic number.

189019950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189019950 is an abundant number, since it is smaller than the sum of its proper divisors (356304522).

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

189019950 is a wasteful number, since it uses less digits than its factorization.

189019950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25746 (or 25734 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 189019950 is about 13748.4526402065. The cubic root of 189019950 is about 573.8995461727.

The spelling of 189019950 in words is "one hundred eighty-nine million, nineteen thousand, nine hundred fifty".