189507133 has 2 divisors, whose sum is σ = 189507134. Its totient is φ = 189507132.

The previous prime is 189507127. The next prime is 189507137. The reversal of 189507133 is 331705981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184226329 + 5280804 = 13573^2 + 2298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189507133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189507092 and 189507101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189507137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94753566 + 94753567.

It is an arithmetic number, because the mean of its divisors is an integer number (94753567).

Almost surely, 2^189507133 is an apocalyptic number.

It is an amenable number.

189507133 is a deficient number, since it is larger than the sum of its proper divisors (1).

189507133 is an equidigital number, since it uses as much as digits as its factorization.

189507133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 189507133 is about 13766.1589777251. The cubic root of 189507133 is about 574.3921824189.

The spelling of 189507133 in words is "one hundred eighty-nine million, five hundred seven thousand, one hundred thirty-three".