18978483068 has 6 divisors (see below), whose sum is σ = 33212345376. Its totient is φ = 9489241532.

The previous prime is 18978483067. The next prime is 18978483101. The reversal of 18978483068 is 86038487981.

It is a self number, because there is not a number n which added to its sum of digits gives 18978483068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18978483067) 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 as a sum of consecutive naturals, namely, 2372310380 + ... + 2372310387.

It is an arithmetic number, because the mean of its divisors is an integer number (5535390896).

Almost surely, 2^18978483068 is an apocalyptic number.

It is an amenable number.

18978483068 is a deficient number, since it is larger than the sum of its proper divisors (14233862308).

18978483068 is a wasteful number, since it uses less digits than its factorization.

18978483068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744620771 (or 4744620769 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 18978483068 in words is "eighteen billion, nine hundred seventy-eight million, four hundred eighty-three thousand, sixty-eight".