18529331131 has 8 divisors (see below), whose sum is σ = 18568750464. Its totient is φ = 18489947520.

The previous prime is 18529331087. The next prime is 18529331153. The reversal of 18529331131 is 13113392581.

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 18529331131 - 2¹⁹ = 18528806843 is a prime.

It is a super-2 number, since 2×18529331131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18529731131) 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 7 ways as a sum of consecutive naturals, for example, 1197315 + ... + 1212691.

It is an arithmetic number, because the mean of its divisors is an integer number (2321093808).

Almost surely, 2^18529331131 is an apocalyptic number.

18529331131 is a deficient number, since it is larger than the sum of its proper divisors (39419333).

18529331131 is a wasteful number, since it uses less digits than its factorization.

18529331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17861.

The product of its digits is 19440, while the sum is 37.

The spelling of 18529331131 in words is "eighteen billion, five hundred twenty-nine million, three hundred thirty-one thousand, one hundred thirty-one".