189380579 has 2 divisors, whose sum is σ = 189380580. Its totient is φ = 189380578.

The previous prime is 189380563. The next prime is 189380591. The reversal of 189380579 is 975083981.

It is a strong prime.

It is an emirp because it is prime and its reverse (975083981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189380579 - 2⁴ = 189380563 is a prime.

It is not a weakly prime, because it can be changed into another prime (189380549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94690289 + 94690290.

It is an arithmetic number, because the mean of its divisors is an integer number (94690290).

Almost surely, 2^189380579 is an apocalyptic number.

189380579 is a deficient number, since it is larger than the sum of its proper divisors (1).

189380579 is an equidigital number, since it uses as much as digits as its factorization.

189380579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 189380579 is about 13761.5616483014. The cubic root of 189380579 is about 574.2642930981.

The spelling of 189380579 in words is "one hundred eighty-nine million, three hundred eighty thousand, five hundred seventy-nine".