189211853 has 4 divisors (see below), whose sum is σ = 200341980. Its totient is φ = 178081728.

The previous prime is 189211849. The next prime is 189211859. The reversal of 189211853 is 358112981.

189211853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 172055689 + 17156164 = 13117^2 + 4142^2 .

It is a cyclic number.

It is not a de Polignac number, because 189211853 - 2² = 189211849 is a prime.

It is a super-2 number, since 2×189211853² = 71602250631387218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189211859) 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, 5565038 + ... + 5565071.

It is an arithmetic number, because the mean of its divisors is an integer number (50085495).

Almost surely, 2^189211853 is an apocalyptic number.

It is an amenable number.

189211853 is a deficient number, since it is larger than the sum of its proper divisors (11130127).

189211853 is a wasteful number, since it uses less digits than its factorization.

189211853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130126.

The product of its digits is 17280, while the sum is 38.

The square root of 189211853 is about 13755.4299460250. The cubic root of 189211853 is about 574.0936981562.

The spelling of 189211853 in words is "one hundred eighty-nine million, two hundred eleven thousand, eight hundred fifty-three".