189739486513 has 2 divisors, whose sum is σ = 189739486514. Its totient is φ = 189739486512.

The previous prime is 189739486481. The next prime is 189739486543. The reversal of 189739486513 is 315684937981.

189739486513 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 can be written as a sum of positive squares in only one way, i.e., 154706128929 + 35033357584 = 393327^2 + 187172^2 .

It is a cyclic number.

It is not a de Polignac number, because 189739486513 - 2⁵ = 189739486481 is a prime.

It is not a weakly prime, because it can be changed into another prime (189739486543) 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, 94869743256 + 94869743257.

It is an arithmetic number, because the mean of its divisors is an integer number (94869743257).

Almost surely, 2^189739486513 is an apocalyptic number.

It is an amenable number.

189739486513 is a deficient number, since it is larger than the sum of its proper divisors (1).

189739486513 is an equidigital number, since it uses as much as digits as its factorization.

189739486513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 64.

The spelling of 189739486513 in words is "one hundred eighty-nine billion, seven hundred thirty-nine million, four hundred eighty-six thousand, five hundred thirteen".