189455633 has 4 divisors (see below), whose sum is σ = 200600100. Its totient is φ = 178311168.

The previous prime is 189455611. The next prime is 189455639. The reversal of 189455633 is 336554981.

189455633 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 57274624 + 132181009 = 7568^2 + 11497^2 .

It is a cyclic number.

It is not a de Polignac number, because 189455633 - 2²⁴ = 172678417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189455639) 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, 5572208 + ... + 5572241.

It is an arithmetic number, because the mean of its divisors is an integer number (50150025).

Almost surely, 2^189455633 is an apocalyptic number.

It is an amenable number.

189455633 is a deficient number, since it is larger than the sum of its proper divisors (11144467).

189455633 is a wasteful number, since it uses less digits than its factorization.

189455633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11144466.

The product of its digits is 388800, while the sum is 44.

The square root of 189455633 is about 13764.2883215951. The cubic root of 189455633 is about 574.3401458949.

The spelling of 189455633 in words is "one hundred eighty-nine million, four hundred fifty-five thousand, six hundred thirty-three".