18718570334 has 4 divisors (see below), whose sum is σ = 28077855504. Its totient is φ = 9359285166.

The previous prime is 18718570333. The next prime is 18718570337. The reversal of 18718570334 is 43307581781.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18718570331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4679642582 + ... + 4679642585.

It is an arithmetic number, because the mean of its divisors is an integer number (7019463876).

Almost surely, 2^18718570334 is an apocalyptic number.

18718570334 is a deficient number, since it is larger than the sum of its proper divisors (9359285170).

18718570334 is an equidigital number, since it uses as much as digits as its factorization.

18718570334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359285169.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 18718570334 in words is "eighteen billion, seven hundred eighteen million, five hundred seventy thousand, three hundred thirty-four".