18429639020 has 48 divisors (see below), whose sum is σ = 41737096128. Its totient is φ = 6795360000.

The previous prime is 18429639001. The next prime is 18429639029. The reversal of 18429639020 is 2093692481.

It is not an unprimeable number, because it can be changed into a prime (18429639029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140270 + ... + 237770.

It is an arithmetic number, because the mean of its divisors is an integer number (869522836).

Almost surely, 2^18429639020 is an apocalyptic number.

18429639020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18429639020 is an abundant number, since it is smaller than the sum of its proper divisors (23307457108).

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

18429639020 is a wasteful number, since it uses less digits than its factorization.

18429639020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98250 (or 98248 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 18429639020 in words is "eighteen billion, four hundred twenty-nine million, six hundred thirty-nine thousand, twenty".