189205405523 has 2 divisors, whose sum is σ = 189205405524. Its totient is φ = 189205405522.

The previous prime is 189205405463. The next prime is 189205405553. The reversal of 189205405523 is 325504502981.

189205405523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189205405523 - 2⁸ = 189205405267 is a prime.

It is not a weakly prime, because it can be changed into another prime (189205405553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94602702761 + 94602702762.

It is an arithmetic number, because the mean of its divisors is an integer number (94602702762).

Almost surely, 2^189205405523 is an apocalyptic number.

189205405523 is a deficient number, since it is larger than the sum of its proper divisors (1).

189205405523 is an equidigital number, since it uses as much as digits as its factorization.

189205405523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 189205405523 in words is "one hundred eighty-nine billion, two hundred five million, four hundred five thousand, five hundred twenty-three".