189953850 has 24 divisors (see below), whose sum is σ = 471085920. Its totient is φ = 50654320.

The previous prime is 189953809. The next prime is 189953851. The reversal of 189953850 is 58359981.

189953850 is digitally balanced in base 3, 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 189953850.

It is not an unprimeable number, because it can be changed into a prime (189953851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633030 + ... + 633329.

It is an arithmetic number, because the mean of its divisors is an integer number (19628580).

Almost surely, 2^189953850 is an apocalyptic number.

189953850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189953850 is an abundant number, since it is smaller than the sum of its proper divisors (281132070).

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

189953850 is a wasteful number, since it uses less digits than its factorization.

189953850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266374 (or 1266369 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 48.

The square root of 189953850 is about 13782.3746139771. The cubic root of 189953850 is about 574.8431582306.

The spelling of 189953850 in words is "one hundred eighty-nine million, nine hundred fifty-three thousand, eight hundred fifty".