189030013 has 2 divisors, whose sum is σ = 189030014. Its totient is φ = 189030012.

The previous prime is 189029983. The next prime is 189030019. The reversal of 189030013 is 310030981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160706329 + 28323684 = 12677^2 + 5322^2 .

It is a cyclic number.

It is not a de Polignac number, because 189030013 - 2²¹ = 186932861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189030013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189030019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94515006 + 94515007.

It is an arithmetic number, because the mean of its divisors is an integer number (94515007).

Almost surely, 2^189030013 is an apocalyptic number.

It is an amenable number.

189030013 is a deficient number, since it is larger than the sum of its proper divisors (1).

189030013 is an equidigital number, since it uses as much as digits as its factorization.

189030013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 189030013 is about 13748.8186037928. The cubic root of 189030013 is about 573.9097303687.

Adding to 189030013 its reverse (310030981), we get a palindrome (499060994).

The spelling of 189030013 in words is "one hundred eighty-nine million, thirty thousand, thirteen".