189643936 has 24 divisors (see below), whose sum is σ = 379693440. Its totient is φ = 93213888.

The previous prime is 189643933. The next prime is 189643939. The reversal of 189643936 is 639346981.

189643936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189643933) and next prime (189643939).

It is a self number, because there is not a number n which added to its sum of digits gives 189643936.

It is not an unprimeable number, because it can be changed into a prime (189643931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48336 + ... + 52111.

It is an arithmetic number, because the mean of its divisors is an integer number (15820560).

Almost surely, 2^189643936 is an apocalyptic number.

189643936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189643936 is an abundant number, since it is smaller than the sum of its proper divisors (190049504).

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

189643936 is a wasteful number, since it uses less digits than its factorization.

189643936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100516 (or 100508 counting only the distinct ones).

The product of its digits is 839808, while the sum is 49.

The square root of 189643936 is about 13771.1268965179. The cubic root of 189643936 is about 574.5303648569.

The spelling of 189643936 in words is "one hundred eighty-nine million, six hundred forty-three thousand, nine hundred thirty-six".