18349831005 has 64 divisors (see below), whose sum is σ = 32391394560. Its totient is φ = 8796569600.

The previous prime is 18349830979. The next prime is 18349831007. The reversal of 18349831005 is 50013894381.

It is not a de Polignac number, because 18349831005 - 2⁸ = 18349830749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18349831007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9713101 + ... + 9714989.

It is an arithmetic number, because the mean of its divisors is an integer number (506115540).

Almost surely, 2^18349831005 is an apocalyptic number.

18349831005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18349831005 is a deficient number, since it is larger than the sum of its proper divisors (14041563555).

18349831005 is a wasteful number, since it uses less digits than its factorization.

18349831005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 18349831005 in words is "eighteen billion, three hundred forty-nine million, eight hundred thirty-one thousand, five".