18459139928 has 16 divisors (see below), whose sum is σ = 34705200480. Its totient is φ = 9204419808.

The previous prime is 18459139913. The next prime is 18459139949. The reversal of 18459139928 is 82993195481.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3140651 + ... + 3146522.

It is an arithmetic number, because the mean of its divisors is an integer number (2169075030).

Almost surely, 2^18459139928 is an apocalyptic number.

It is an amenable number.

18459139928 is a deficient number, since it is larger than the sum of its proper divisors (16246060552).

18459139928 is a wasteful number, since it uses less digits than its factorization.

18459139928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287546 (or 6287542 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 59.

The spelling of 18459139928 in words is "eighteen billion, four hundred fifty-nine million, one hundred thirty-nine thousand, nine hundred twenty-eight".