18404201684 has 24 divisors (see below), whose sum is σ = 35216850816. Its totient is φ = 8346128000.

The previous prime is 18404201681. The next prime is 18404201693. The reversal of 18404201684 is 48610240481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18404201681) 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 7 ways as a sum of consecutive naturals, for example, 466277 + ... + 504204.

It is an arithmetic number, because the mean of its divisors is an integer number (1467368784).

Almost surely, 2^18404201684 is an apocalyptic number.

It is an amenable number.

18404201684 is a deficient number, since it is larger than the sum of its proper divisors (16812649132).

18404201684 is a wasteful number, since it uses less digits than its factorization.

18404201684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970927 (or 970925 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 18404201684 in words is "eighteen billion, four hundred four million, two hundred one thousand, six hundred eighty-four".