18214972678 has 8 divisors (see below), whose sum is σ = 31225667472. Its totient is φ = 7806416856.

The previous prime is 18214972667. The next prime is 18214972679. The reversal of 18214972678 is 87627941281.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214972679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650534725 + ... + 650534752.

It is an arithmetic number, because the mean of its divisors is an integer number (3903208434).

Almost surely, 2^18214972678 is an apocalyptic number.

18214972678 is a deficient number, since it is larger than the sum of its proper divisors (13010694794).

18214972678 is a wasteful number, since it uses less digits than its factorization.

18214972678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301069486.

The product of its digits is 2709504, while the sum is 55.

The spelling of 18214972678 in words is "eighteen billion, two hundred fourteen million, nine hundred seventy-two thousand, six hundred seventy-eight".