18913878483 has 8 divisors (see below), whose sum is σ = 25219739088. Its totient is φ = 12608635104.

The previous prime is 18913878481. The next prime is 18913878493. The reversal of 18913878483 is 38487831981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18913878483 - 2¹ = 18913878481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18913878481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77316 + ... + 209297.

It is an arithmetic number, because the mean of its divisors is an integer number (3152467386).

Almost surely, 2^18913878483 is an apocalyptic number.

18913878483 is a deficient number, since it is larger than the sum of its proper divisors (6305860605).

18913878483 is a wasteful number, since it uses less digits than its factorization.

18913878483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308613.

The product of its digits is 9289728, while the sum is 60.

The spelling of 18913878483 in words is "eighteen billion, nine hundred thirteen million, eight hundred seventy-eight thousand, four hundred eighty-three".