18154887514 has 16 divisors (see below), whose sum is σ = 27416168640. Its totient is φ = 9016233120.

The previous prime is 18154887481. The next prime is 18154887529. The reversal of 18154887514 is 41578845181.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 544867 + ... + 577225.

It is an arithmetic number, because the mean of its divisors is an integer number (1713510540).

Almost surely, 2^18154887514 is an apocalyptic number.

18154887514 is a deficient number, since it is larger than the sum of its proper divisors (9261281126).

18154887514 is a wasteful number, since it uses less digits than its factorization.

18154887514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34245.

The product of its digits is 1433600, while the sum is 52.

The spelling of 18154887514 in words is "eighteen billion, one hundred fifty-four million, eight hundred eighty-seven thousand, five hundred fourteen".