1189728617327 has 2 divisors, whose sum is σ = 1189728617328. Its totient is φ = 1189728617326.

The previous prime is 1189728617309. The next prime is 1189728617351. The reversal of 1189728617327 is 7237168279811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1189728617327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1189728617327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189728617377) 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, 594864308663 + 594864308664.

It is an arithmetic number, because the mean of its divisors is an integer number (594864308664).

Almost surely, 2^{1189728617327} is an apocalyptic number.

1189728617327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189728617327 is an equidigital number, since it uses as much as digits as its factorization.

1189728617327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 62.

The spelling of 1189728617327 in words is "one trillion, one hundred eighty-nine billion, seven hundred twenty-eight million, six hundred seventeen thousand, three hundred twenty-seven".