1163869786645 has 4 divisors (see below), whose sum is σ = 1396643743980. Its totient is φ = 931095829312.

The previous prime is 1163869786609. The next prime is 1163869786649. The reversal of 1163869786645 is 5466879683611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 923826623281 + 240043163364 = 961159^2 + 489942^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163869786645 - 2²⁵ = 1163836232213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163869786649) 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 in 3 ways as a sum of consecutive naturals, for example, 116386978660 + ... + 116386978669.

It is an arithmetic number, because the mean of its divisors is an integer number (349160935995).

Almost surely, 2^{1163869786645} is an apocalyptic number.

It is an amenable number.

1163869786645 is a deficient number, since it is larger than the sum of its proper divisors (232773957335).

1163869786645 is an equidigital number, since it uses as much as digits as its factorization.

1163869786645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232773957334.

The product of its digits is 313528320, while the sum is 70.

The spelling of 1163869786645 in words is "one trillion, one hundred sixty-three billion, eight hundred sixty-nine million, seven hundred eighty-six thousand, six hundred forty-five".