18984880963 has 4 divisors (see below), whose sum is σ = 18998770320. Its totient is φ = 18970991608.

The previous prime is 18984880949. The next prime is 18984881021. The reversal of 18984880963 is 36908848981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18984880963 - 2⁹ = 18984880451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18984880895 and 18984880904.

It is not an unprimeable number, because it can be changed into a prime (18984880463) 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 3 ways as a sum of consecutive naturals, for example, 6942628 + ... + 6945361.

It is an arithmetic number, because the mean of its divisors is an integer number (4749692580).

Almost surely, 2^18984880963 is an apocalyptic number.

18984880963 is a deficient number, since it is larger than the sum of its proper divisors (13889357).

18984880963 is a wasteful number, since it uses less digits than its factorization.

18984880963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889356.

The product of its (nonzero) digits is 23887872, while the sum is 64.

The spelling of 18984880963 in words is "eighteen billion, nine hundred eighty-four million, eight hundred eighty thousand, nine hundred sixty-three".