18734784204274 has 16 divisors (see below), whose sum is σ = 28200128056128. Its totient is φ = 9334746145072.

The previous prime is 18734784204251. The next prime is 18734784204277. The reversal of 18734784204274 is 47240248743781.

It is not an unprimeable number, because it can be changed into a prime (18734784204277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7000059 + ... + 9298945.

It is an arithmetic number, because the mean of its divisors is an integer number (1762508003508).

Almost surely, 2^{18734784204274} is an apocalyptic number.

18734784204274 is a deficient number, since it is larger than the sum of its proper divisors (9465343851854).

18734784204274 is a wasteful number, since it uses less digits than its factorization.

18734784204274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313089.

The product of its (nonzero) digits is 67436544, while the sum is 61.

The spelling of 18734784204274 in words is "eighteen trillion, seven hundred thirty-four billion, seven hundred eighty-four million, two hundred four thousand, two hundred seventy-four".