18142330487 has 16 divisors (see below), whose sum is σ = 20123510400. Its totient is φ = 16277614080.

The previous prime is 18142330469. The next prime is 18142330501. The reversal of 18142330487 is 78403324181.

It is a cyclic number.

It is not a de Polignac number, because 18142330487 - 2⁸ = 18142330231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142330187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193964 + ... + 271857.

It is an arithmetic number, because the mean of its divisors is an integer number (1257719400).

Almost surely, 2^18142330487 is an apocalyptic number.

18142330487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18142330487 is a deficient number, since it is larger than the sum of its proper divisors (1981179913).

18142330487 is a wasteful number, since it uses less digits than its factorization.

18142330487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465946.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 18142330487 in words is "eighteen billion, one hundred forty-two million, three hundred thirty thousand, four hundred eighty-seven".