18004743548 has 24 divisors (see below), whose sum is σ = 34378740144. Its totient is φ = 8182534400.

The previous prime is 18004743541. The next prime is 18004743553. The reversal of 18004743548 is 84534740081.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 18004743499 and 18004743508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004743541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240836 + ... + 306612.

It is an arithmetic number, because the mean of its divisors is an integer number (1432447506).

Almost surely, 2^18004743548 is an apocalyptic number.

It is an amenable number.

18004743548 is a deficient number, since it is larger than the sum of its proper divisors (16373996596).

18004743548 is a wasteful number, since it uses less digits than its factorization.

18004743548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72013 (or 72011 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 18004743548 in words is "eighteen billion, four million, seven hundred forty-three thousand, five hundred forty-eight".