18978483071 has 8 divisors (see below), whose sum is σ = 19487790000. Its totient is φ = 18471386560.

The previous prime is 18978483067. The next prime is 18978483101. The reversal of 18978483071 is 17038487981.

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

It is a cyclic number.

It is not a de Polignac number, because 18978483071 - 2² = 18978483067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18978482998 and 18978483016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18978483871) 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, 535196 + ... + 569553.

It is an arithmetic number, because the mean of its divisors is an integer number (2435973750).

Almost surely, 2^18978483071 is an apocalyptic number.

18978483071 is a deficient number, since it is larger than the sum of its proper divisors (509306929).

18978483071 is a wasteful number, since it uses less digits than its factorization.

18978483071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105209.

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 18978483071 in words is "eighteen billion, nine hundred seventy-eight million, four hundred eighty-three thousand, seventy-one".