18235211648 has 16 divisors (see below), whose sum is σ = 36327960960. Its totient is φ = 9117605760.

The previous prime is 18235211633. The next prime is 18235211651. The reversal of 18235211648 is 84611253281.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71231168 + ... + 71231423.

It is an arithmetic number, because the mean of its divisors is an integer number (2270497560).

Almost surely, 2^18235211648 is an apocalyptic number.

It is an amenable number.

18235211648 is a deficient number, since it is larger than the sum of its proper divisors (18092749312).

18235211648 is an equidigital number, since it uses as much as digits as its factorization.

18235211648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142462605 (or 142462593 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The spelling of 18235211648 in words is "eighteen billion, two hundred thirty-five million, two hundred eleven thousand, six hundred forty-eight".