18119679071 has 4 divisors (see below), whose sum is σ = 19513500552. Its totient is φ = 16725857592.

The previous prime is 18119679043. The next prime is 18119679077. The reversal of 18119679071 is 17097691181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18119679071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119679077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696910721 + ... + 696910746.

It is an arithmetic number, because the mean of its divisors is an integer number (4878375138).

Almost surely, 2^18119679071 is an apocalyptic number.

18119679071 is a deficient number, since it is larger than the sum of its proper divisors (1393821481).

18119679071 is a wasteful number, since it uses less digits than its factorization.

18119679071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393821480.

The product of its (nonzero) digits is 190512, while the sum is 50.

The spelling of 18119679071 in words is "eighteen billion, one hundred nineteen million, six hundred seventy-nine thousand, seventy-one".