18119129905 has 8 divisors (see below), whose sum is σ = 21762675072. Its totient is φ = 14482157808.

The previous prime is 18119129893. The next prime is 18119129909. The reversal of 18119129905 is 50992191181.

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 18119129905 - 2¹¹ = 18119127857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18119129909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637199 + ... + 1648228.

It is an arithmetic number, because the mean of its divisors is an integer number (2720334384).

Almost surely, 2^18119129905 is an apocalyptic number.

It is an amenable number.

18119129905 is a deficient number, since it is larger than the sum of its proper divisors (3643545167).

18119129905 is a wasteful number, since it uses less digits than its factorization.

18119129905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286535.

The product of its (nonzero) digits is 58320, while the sum is 46.

The spelling of 18119129905 in words is "eighteen billion, one hundred nineteen million, one hundred twenty-nine thousand, nine hundred five".