1181532441866 has 16 divisors (see below), whose sum is σ = 2032692321600. Its totient is φ = 504569012640.

The previous prime is 1181532441839. The next prime is 1181532441871. The reversal of 1181532441866 is 6681442351811.

It is a super-2 number, since 2×1181532441866² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150165416 + ... + 150173283.

It is an arithmetic number, because the mean of its divisors is an integer number (127043270100).

Almost surely, 2^{1181532441866} is an apocalyptic number.

1181532441866 is a deficient number, since it is larger than the sum of its proper divisors (851159879734).

1181532441866 is a wasteful number, since it uses less digits than its factorization.

1181532441866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300338989.

The product of its digits is 1105920, while the sum is 50.

The spelling of 1181532441866 in words is "one trillion, one hundred eighty-one billion, five hundred thirty-two million, four hundred forty-one thousand, eight hundred sixty-six".