18004380472 has 32 divisors (see below), whose sum is σ = 36361684800. Its totient is φ = 8308185984.

The previous prime is 18004380461. The next prime is 18004380479. The reversal of 18004380472 is 27408340081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004380479) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 711298 + ... + 736174.

It is an arithmetic number, because the mean of its divisors is an integer number (1136302650).

Almost surely, 2^18004380472 is an apocalyptic number.

It is an amenable number.

18004380472 is an abundant number, since it is smaller than the sum of its proper divisors (18357304328).

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

18004380472 is a wasteful number, since it uses less digits than its factorization.

18004380472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31855 (or 31851 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 18004380472 in words is "eighteen billion, four million, three hundred eighty thousand, four hundred seventy-two".