18747307434 has 8 divisors (see below), whose sum is σ = 37494614880. Its totient is φ = 6249102476.

The previous prime is 18747307387. The next prime is 18747307457. The reversal of 18747307434 is 43470374781.

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

18747307434 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562275614 + ... + 1562275625.

It is an arithmetic number, because the mean of its divisors is an integer number (4686826860).

Almost surely, 2^18747307434 is an apocalyptic number.

18747307434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18747307434 is a wasteful number, since it uses less digits than its factorization.

18747307434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124551244.

The product of its (nonzero) digits is 1580544, while the sum is 48.

The spelling of 18747307434 in words is "eighteen billion, seven hundred forty-seven million, three hundred seven thousand, four hundred thirty-four".