189611526431 has 2 divisors, whose sum is σ = 189611526432. Its totient is φ = 189611526430.

The previous prime is 189611526341. The next prime is 189611526479. The reversal of 189611526431 is 134625116981.

189611526431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (189611526341) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189611526431 - 2³⁰ = 188537784607 is a prime.

It is a super-2 number, since 2×189611526431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189611526491) 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, 94805763215 + 94805763216.

It is an arithmetic number, because the mean of its divisors is an integer number (94805763216).

Almost surely, 2^189611526431 is an apocalyptic number.

189611526431 is a deficient number, since it is larger than the sum of its proper divisors (1).

189611526431 is an equidigital number, since it uses as much as digits as its factorization.

189611526431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The spelling of 189611526431 in words is "one hundred eighty-nine billion, six hundred eleven million, five hundred twenty-six thousand, four hundred thirty-one".