18131040929 has 8 divisors (see below), whose sum is σ = 18415550880. Its totient is φ = 17848326496.

The previous prime is 18131040911. The next prime is 18131040979. The reversal of 18131040929 is 92904013181.

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 18131040929 - 2⁸ = 18131040673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18131040892 and 18131040901.

It is not an unprimeable number, because it can be changed into a prime (18131040979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428519 + ... + 468924.

It is an arithmetic number, because the mean of its divisors is an integer number (2301943860).

Almost surely, 2^18131040929 is an apocalyptic number.

It is an amenable number.

18131040929 is a deficient number, since it is larger than the sum of its proper divisors (284509951).

18131040929 is an equidigital number, since it uses as much as digits as its factorization.

18131040929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897759.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 18131040929 in words is "eighteen billion, one hundred thirty-one million, forty thousand, nine hundred twenty-nine".