18486511131 has 8 divisors (see below), whose sum is σ = 26889470784. Its totient is φ = 11203946120.

The previous prime is 18486511097. The next prime is 18486511217. The reversal of 18486511131 is 13111568481.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18486511131 - 2³³ = 9896576539 is a prime.

It is a super-2 number, since 2×18486511131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18486511131.

It is not an unprimeable number, because it can be changed into a prime (18486511031) 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, 280098621 + ... + 280098686.

It is an arithmetic number, because the mean of its divisors is an integer number (3361183848).

Almost surely, 2^18486511131 is an apocalyptic number.

18486511131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18486511131 is a deficient number, since it is larger than the sum of its proper divisors (8402959653).

18486511131 is a wasteful number, since it uses less digits than its factorization.

18486511131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560197321.

The product of its digits is 23040, while the sum is 39.

The spelling of 18486511131 in words is "eighteen billion, four hundred eighty-six million, five hundred eleven thousand, one hundred thirty-one".