18279338278 has 8 divisors (see below), whose sum is σ = 27420735168. Its totient is φ = 9139093224.

The previous prime is 18279338269. The next prime is 18279338333. The reversal of 18279338278 is 87283397281.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247126 + ... + 312457.

It is an arithmetic number, because the mean of its divisors is an integer number (3427591896).

Almost surely, 2^18279338278 is an apocalyptic number.

18279338278 is a deficient number, since it is larger than the sum of its proper divisors (9141396890).

18279338278 is a wasteful number, since it uses less digits than its factorization.

18279338278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575918.

The product of its digits is 8128512, while the sum is 58.

The spelling of 18279338278 in words is "eighteen billion, two hundred seventy-nine million, three hundred thirty-eight thousand, two hundred seventy-eight".