18778482498 has 32 divisors (see below), whose sum is σ = 38585359296. Its totient is φ = 6088212288.

The previous prime is 18778482497. The next prime is 18778482511. The reversal of 18778482498 is 89428487781.

It is not an unprimeable number, because it can be changed into a prime (18778482497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709165 + ... + 735167.

It is an arithmetic number, because the mean of its divisors is an integer number (1205792478).

Almost surely, 2^18778482498 is an apocalyptic number.

18778482498 is an abundant number, since it is smaller than the sum of its proper divisors (19806876798).

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

18778482498 is a wasteful number, since it uses less digits than its factorization.

18778482498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29298.

The product of its digits is 57802752, while the sum is 66.

The spelling of 18778482498 in words is "eighteen billion, seven hundred seventy-eight million, four hundred eighty-two thousand, four hundred ninety-eight".