1182705386487 has 4 divisors (see below), whose sum is σ = 1576940515320. Its totient is φ = 788470257656.

The previous prime is 1182705386419. The next prime is 1182705386509. The reversal of 1182705386487 is 7846835072811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1182705386487 - 2¹⁸ = 1182705124343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1182705386487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1182701386487) 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 in 3 ways as a sum of consecutive naturals, for example, 197117564412 + ... + 197117564417.

It is an arithmetic number, because the mean of its divisors is an integer number (394235128830).

Almost surely, 2^{1182705386487} is an apocalyptic number.

1182705386487 is a deficient number, since it is larger than the sum of its proper divisors (394235128833).

1182705386487 is an equidigital number, since it uses as much as digits as its factorization.

1182705386487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394235128832.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 1182705386487 in words is "one trillion, one hundred eighty-two billion, seven hundred five million, three hundred eighty-six thousand, four hundred eighty-seven".