1189392961487 has 2 divisors, whose sum is σ = 1189392961488. Its totient is φ = 1189392961486.

The previous prime is 1189392961459. The next prime is 1189392961579. The reversal of 1189392961487 is 7841692939811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1189392961487 - 2¹² = 1189392957391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189392961417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594696480743 + 594696480744.

It is an arithmetic number, because the mean of its divisors is an integer number (594696480744).

Almost surely, 2^{1189392961487} is an apocalyptic number.

1189392961487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189392961487 is an equidigital number, since it uses as much as digits as its factorization.

1189392961487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 68.

The spelling of 1189392961487 in words is "one trillion, one hundred eighty-nine billion, three hundred ninety-two million, nine hundred sixty-one thousand, four hundred eighty-seven".