18274830109121 has 4 divisors (see below), whose sum is σ = 18274972572612. Its totient is φ = 18274687645632.

The previous prime is 18274830108991. The next prime is 18274830109147. The reversal of 18274830109121 is 12190103847281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13028490250000 + 5246339859121 = 3609500^2 + 2290489^2 .

It is a cyclic number.

It is not a de Polignac number, because 18274830109121 - 2¹⁰ = 18274830108097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18274830109171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71039156 + ... + 71295941.

It is an arithmetic number, because the mean of its divisors is an integer number (4568743143153).

Almost surely, 2^{18274830109121} is an apocalyptic number.

It is an amenable number.

18274830109121 is a deficient number, since it is larger than the sum of its proper divisors (142463491).

18274830109121 is a wasteful number, since it uses less digits than its factorization.

18274830109121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142463490.

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 18274830109121 in words is "eighteen trillion, two hundred seventy-four billion, eight hundred thirty million, one hundred nine thousand, one hundred twenty-one".