18414534278 has 24 divisors (see below), whose sum is σ = 32146939800. Its totient is φ = 7888147008.

The previous prime is 18414534241. The next prime is 18414534287. The reversal of 18414534278 is 87243541481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164513 + ... + 252771.

It is an arithmetic number, because the mean of its divisors is an integer number (1339455825).

Almost surely, 2^18414534278 is an apocalyptic number.

18414534278 is a deficient number, since it is larger than the sum of its proper divisors (13732405522).

18414534278 is a wasteful number, since it uses less digits than its factorization.

18414534278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90404 (or 90397 counting only the distinct ones).

The product of its digits is 860160, while the sum is 47.

The spelling of 18414534278 in words is "eighteen billion, four hundred fourteen million, five hundred thirty-four thousand, two hundred seventy-eight".