18039469338 has 160 divisors (see below), whose sum is σ = 45134781120. Its totient is φ = 5338794240.

The previous prime is 18039469291. The next prime is 18039469339. The reversal of 18039469338 is 83396493081.

18039469338 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (18039469339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 38628181 + ... + 38628647.

It is an arithmetic number, because the mean of its divisors is an integer number (282092382).

Almost surely, 2^18039469338 is an apocalyptic number.

18039469338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18039469338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22567390560).

18039469338 is an abundant number, since it is smaller than the sum of its proper divisors (27095311782).

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

18039469338 is a wasteful number, since it uses less digits than its factorization.

18039469338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 18039469338 in words is "eighteen billion, thirty-nine million, four hundred sixty-nine thousand, three hundred thirty-eight".