18920898484 has 24 divisors (see below), whose sum is σ = 34190240000. Its totient is φ = 9152447040.

The previous prime is 18920898481. The next prime is 18920898499. The reversal of 18920898484 is 48489802981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18920898481) 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, 412072 + ... + 455680.

Almost surely, 2^18920898484 is an apocalyptic number.

It is an amenable number.

18920898484 is a deficient number, since it is larger than the sum of its proper divisors (15269341516).

18920898484 is a wasteful number, since it uses less digits than its factorization.

18920898484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47143 (or 47141 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 61.

The spelling of 18920898484 in words is "eighteen billion, nine hundred twenty million, eight hundred ninety-eight thousand, four hundred eighty-four".