18447240142 has 8 divisors (see below), whose sum is σ = 27944829432. Its totient is φ = 9132297000.

The previous prime is 18447240139. The next prime is 18447240221. The reversal of 18447240142 is 24104274481.

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

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 45661284 + ... + 45661687.

It is an arithmetic number, because the mean of its divisors is an integer number (3493103679).

Almost surely, 2^18447240142 is an apocalyptic number.

18447240142 is a deficient number, since it is larger than the sum of its proper divisors (9497589290).

18447240142 is a wasteful number, since it uses less digits than its factorization.

18447240142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91323074.

The product of its (nonzero) digits is 57344, while the sum is 37.

The spelling of 18447240142 in words is "eighteen billion, four hundred forty-seven million, two hundred forty thousand, one hundred forty-two".