189801853 has 8 divisors (see below), whose sum is σ = 191382872. Its totient is φ = 188225856.

The previous prime is 189801847. The next prime is 189801869. The reversal of 189801853 is 358108981.

189801853 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 6416089 + 183385764 = 2533^2 + 13542^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189801853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189801893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118051 + ... + 119647.

It is an arithmetic number, because the mean of its divisors is an integer number (23922859).

Almost surely, 2^189801853 is an apocalyptic number.

It is an amenable number.

189801853 is a deficient number, since it is larger than the sum of its proper divisors (1581019).

189801853 is a wasteful number, since it uses less digits than its factorization.

189801853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 189801853 is about 13776.8593300505. The cubic root of 189801853 is about 574.6897915911.

The spelling of 189801853 in words is "one hundred eighty-nine million, eight hundred one thousand, eight hundred fifty-three".