18140840334 has 24 divisors (see below), whose sum is σ = 40367457000. Its totient is φ = 5883515568.

The previous prime is 18140840323. The next prime is 18140840357. The reversal of 18140840334 is 43304804181.

18140840334 is a `hidden beast` number, since 181 + 40 + 8 + 403 + 34 = 666.

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, 13618584 + ... + 13619915.

It is an arithmetic number, because the mean of its divisors is an integer number (1681977375).

Almost surely, 2^18140840334 is an apocalyptic number.

18140840334 is an abundant number, since it is smaller than the sum of its proper divisors (22226616666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18140840334 is a wasteful number, since it uses less digits than its factorization.

18140840334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27238544 (or 27238541 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 18140840334 in words is "eighteen billion, one hundred forty million, eight hundred forty thousand, three hundred thirty-four".