18576049448 has 64 divisors (see below), whose sum is σ = 38431800000. Its totient is φ = 8347276800.

The previous prime is 18576049433. The next prime is 18576049469. The reversal of 18576049448 is 84494067581.

It is a happy number.

It is a super-2 number, since 2×18576049448² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18576049393 and 18576049402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4784468 + ... + 4788348.

It is an arithmetic number, because the mean of its divisors is an integer number (600496875).

Almost surely, 2^18576049448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18576049448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19215900000).

18576049448 is an abundant number, since it is smaller than the sum of its proper divisors (19855750552).

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

18576049448 is a wasteful number, since it uses less digits than its factorization.

18576049448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4502 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 18576049448 in words is "eighteen billion, five hundred seventy-six million, forty-nine thousand, four hundred forty-eight".