189642036547 has 2 divisors, whose sum is σ = 189642036548. Its totient is φ = 189642036546.

The previous prime is 189642036533. The next prime is 189642036587. The reversal of 189642036547 is 745630246981.

189642036547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189642036547 - 2¹⁹ = 189641512259 is a prime.

It is not a weakly prime, because it can be changed into another prime (189642036587) 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, 94821018273 + 94821018274.

It is an arithmetic number, because the mean of its divisors is an integer number (94821018274).

It is a 1-persistent number, because it is pandigital, but 2⋅189642036547 = 379284073094 is not.

Almost surely, 2^189642036547 is an apocalyptic number.

189642036547 is a deficient number, since it is larger than the sum of its proper divisors (1).

189642036547 is an equidigital number, since it uses as much as digits as its factorization.

189642036547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 189642036547 in words is "one hundred eighty-nine billion, six hundred forty-two million, thirty-six thousand, five hundred forty-seven".