1163869786646 has 64 divisors (see below), whose sum is σ = 2173262192640. Its totient is φ = 456535284480.

The previous prime is 1163869786609. The next prime is 1163869786649. The reversal of 1163869786646 is 6466879683611.

It is a self number, because there is not a number n which added to its sum of digits gives 1163869786646.

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 31 ways as a sum of consecutive naturals, for example, 233360 + ... + 1543436.

It is an arithmetic number, because the mean of its divisors is an integer number (33957221760).

Almost surely, 2^{1163869786646} is an apocalyptic number.

1163869786646 is a deficient number, since it is larger than the sum of its proper divisors (1009392405994).

1163869786646 is a wasteful number, since it uses less digits than its factorization.

1163869786646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310229.

The product of its digits is 376233984, while the sum is 71.

The spelling of 1163869786646 in words is "one trillion, one hundred sixty-three billion, eight hundred sixty-nine million, seven hundred eighty-six thousand, six hundred forty-six".