189007501 has 2 divisors, whose sum is σ = 189007502. Its totient is φ = 189007500.

The previous prime is 189007477. The next prime is 189007519. The reversal of 189007501 is 105700981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132020100 + 56987401 = 11490^2 + 7549^2 .

It is an emirp because it is prime and its reverse (105700981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189007501 - 2¹⁹ = 188483213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189007541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94503750 + 94503751.

It is an arithmetic number, because the mean of its divisors is an integer number (94503751).

Almost surely, 2^189007501 is an apocalyptic number.

It is an amenable number.

189007501 is a deficient number, since it is larger than the sum of its proper divisors (1).

189007501 is an equidigital number, since it uses as much as digits as its factorization.

189007501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 189007501 is about 13747.9998908932. Note that the first 3 decimals coincide. The cubic root of 189007501 is about 573.8869467402.

The spelling of 189007501 in words is "one hundred eighty-nine million, seven thousand, five hundred one".