18774327834 has 24 divisors (see below), whose sum is σ = 41080463892. Its totient is φ = 6196147200.

The previous prime is 18774327833. The next prime is 18774327841. The reversal of 18774327834 is 43872347781.

It can be written as a sum of positive squares in 2 ways, for example, as 18754480809 + 19847025 = 136947^2 + 4455^2 .

It is not an unprimeable number, because it can be changed into a prime (18774327833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5161639 + ... + 5165274.

Almost surely, 2^18774327834 is an apocalyptic number.

18774327834 is an abundant number, since it is smaller than the sum of its proper divisors (22306136058).

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

18774327834 is a wasteful number, since it uses less digits than its factorization.

18774327834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327022 (or 10327019 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 54.

The spelling of 18774327834 in words is "eighteen billion, seven hundred seventy-four million, three hundred twenty-seven thousand, eight hundred thirty-four".