1180984266361 has 3 divisors (see below), whose sum is σ = 1180985353093. Its totient is φ = 1180983179630.

The previous prime is 1180984266323. The next prime is 1180984266389. The reversal of 1180984266361 is 1636624890811.

The square root of 1180984266361 is 1086731.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1180984266361 - 2¹⁹ = 1180983742073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180984566361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 543366 + ... + 1630096.

Almost surely, 2^{1180984266361} is an apocalyptic number.

1180984266361 is the 1086731-st square number.

1180984266361 is the 543366-th centered octagonal number.

It is an amenable number.

1180984266361 is a deficient number, since it is larger than the sum of its proper divisors (1086732).

1180984266361 is an frugal number, since it uses more digits than its factorization.

1180984266361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173462 (or 1086731 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 1180984266361 in words is "one trillion, one hundred eighty billion, nine hundred eighty-four million, two hundred sixty-six thousand, three hundred sixty-one".