18548877772 has 6 divisors (see below), whose sum is σ = 32460536108. Its totient is φ = 9274438884.

The previous prime is 18548877757. The next prime is 18548877779. The reversal of 18548877772 is 27777884581.

It is not an unprimeable number, because it can be changed into a prime (18548877779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2318609718 + ... + 2318609725.

Almost surely, 2^18548877772 is an apocalyptic number.

It is an amenable number.

18548877772 is a deficient number, since it is larger than the sum of its proper divisors (13911658336).

18548877772 is a wasteful number, since it uses less digits than its factorization.

18548877772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637219447 (or 4637219445 counting only the distinct ones).

The product of its digits is 49172480, while the sum is 64.

The spelling of 18548877772 in words is "eighteen billion, five hundred forty-eight million, eight hundred seventy-seven thousand, seven hundred seventy-two".