18299929912 has 32 divisors (see below), whose sum is σ = 37480489200. Its totient is φ = 8307302400.

The previous prime is 18299929867. The next prime is 18299929913. The reversal of 18299929912 is 21992999281.

It is a super-2 number, since 2×18299929912² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18299929913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67539 + ... + 202882.

Almost surely, 2^18299929912 is an apocalyptic number.

It is an amenable number.

18299929912 is an abundant number, since it is smaller than the sum of its proper divisors (19180559288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18299929912 is a wasteful number, since it uses less digits than its factorization.

18299929912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271207 (or 271203 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 61.

The spelling of 18299929912 in words is "eighteen billion, two hundred ninety-nine million, nine hundred twenty-nine thousand, nine hundred twelve".