18472965278 has 8 divisors (see below), whose sum is σ = 27853020768. Its totient is φ = 9188625024.

The previous prime is 18472965271. The next prime is 18472965281. The reversal of 18472965278 is 87256927481.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472965271) 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, 23928326 + ... + 23929097.

It is an arithmetic number, because the mean of its divisors is an integer number (3481627596).

Almost surely, 2^18472965278 is an apocalyptic number.

18472965278 is a deficient number, since it is larger than the sum of its proper divisors (9380055490).

18472965278 is a wasteful number, since it uses less digits than its factorization.

18472965278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47857618.

The product of its digits is 13547520, while the sum is 59.

The spelling of 18472965278 in words is "eighteen billion, four hundred seventy-two million, nine hundred sixty-five thousand, two hundred seventy-eight".