18122167834 has 8 divisors (see below), whose sum is σ = 27185928660. Its totient is φ = 9060191616.

The previous prime is 18122167823. The next prime is 18122167837. The reversal of 18122167834 is 43876122181.

It can be written as a sum of positive squares in 2 ways, for example, as 18075995809 + 46172025 = 134447^2 + 6795^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18122167837) 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, 420469 + ... + 461560.

Almost surely, 2^18122167834 is an apocalyptic number.

18122167834 is a deficient number, since it is larger than the sum of its proper divisors (9063760826).

18122167834 is a wasteful number, since it uses less digits than its factorization.

18122167834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892304.

The product of its digits is 129024, while the sum is 43.

The spelling of 18122167834 in words is "eighteen billion, one hundred twenty-two million, one hundred sixty-seven thousand, eight hundred thirty-four".