11518382931 has 8 divisors (see below), whose sum is σ = 16754011584. Its totient is φ = 6980838120.

The previous prime is 11518382917. The next prime is 11518382933. The reversal of 11518382931 is 13928381511.

11518382931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11518382931 - 2¹⁹ = 11517858643 is a prime.

It is a super-2 number, since 2×11518382931² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11518382933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174520921 + ... + 174520986.

It is an arithmetic number, because the mean of its divisors is an integer number (2094251448).

Almost surely, 2^11518382931 is an apocalyptic number.

11518382931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11518382931 is a deficient number, since it is larger than the sum of its proper divisors (5235628653).

11518382931 is a wasteful number, since it uses less digits than its factorization.

11518382931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349041921.

The product of its digits is 51840, while the sum is 42.

The spelling of 11518382931 in words is "eleven billion, five hundred eighteen million, three hundred eighty-two thousand, nine hundred thirty-one".