18271967834 has 8 divisors (see below), whose sum is σ = 27605131680. Its totient is φ = 9070257276.

The previous prime is 18271967797. The next prime is 18271967881. The reversal of 18271967834 is 43876917281.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18271967834.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32862974 + ... + 32863529.

It is an arithmetic number, because the mean of its divisors is an integer number (3450641460).

Almost surely, 2^18271967834 is an apocalyptic number.

18271967834 is a deficient number, since it is larger than the sum of its proper divisors (9333163846).

18271967834 is a wasteful number, since it uses less digits than its factorization.

18271967834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65726644.

The product of its digits is 4064256, while the sum is 56.

The spelling of 18271967834 in words is "eighteen billion, two hundred seventy-one million, nine hundred sixty-seven thousand, eight hundred thirty-four".