11364387181 has 6 divisors (see below), whose sum is σ = 13219797390. Its totient is φ = 9740903256.

The previous prime is 11364387113. The next prime is 11364387191. The reversal of 11364387181 is 18178346311.

It can be written as a sum of positive squares in only one way, i.e., 11335860900 + 28526281 = 106470^2 + 5341^2 .

It is not a de Polignac number, because 11364387181 - 2⁹ = 11364386669 is a prime.

It is a super-2 number, since 2×11364387181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11364387191) 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 5 ways as a sum of consecutive naturals, for example, 115963086 + ... + 115963183.

It is an arithmetic number, because the mean of its divisors is an integer number (2203299565).

Almost surely, 2^11364387181 is an apocalyptic number.

It is an amenable number.

11364387181 is a deficient number, since it is larger than the sum of its proper divisors (1855410209).

11364387181 is an equidigital number, since it uses as much as digits as its factorization.

11364387181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231926283 (or 231926276 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The spelling of 11364387181 in words is "eleven billion, three hundred sixty-four million, three hundred eighty-seven thousand, one hundred eighty-one".