18339069952 has 160 divisors (see below), whose sum is σ = 44291808000. Its totient is φ = 7417626624.

The previous prime is 18339069937. The next prime is 18339069961. The reversal of 18339069952 is 25996093381.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18339069893 and 18339069902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69730173 + ... + 69730435.

It is an arithmetic number, because the mean of its divisors is an integer number (276823800).

Almost surely, 2^18339069952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18339069952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22145904000).

18339069952 is an abundant number, since it is smaller than the sum of its proper divisors (25952738048).

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

18339069952 is an frugal number, since it uses more digits than its factorization.

18339069952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 18339069952 in words is "eighteen billion, three hundred thirty-nine million, sixty-nine thousand, nine hundred fifty-two".