18540741167 has 4 divisors (see below), whose sum is σ = 19966952040. Its totient is φ = 17114530296.

The previous prime is 18540741157. The next prime is 18540741173. The reversal of 18540741167 is 76114704581.

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

It is a cyclic number.

It is not a de Polignac number, because 18540741167 - 2⁶ = 18540741103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18540741157) 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, 713105417 + ... + 713105442.

It is an arithmetic number, because the mean of its divisors is an integer number (4991738010).

Almost surely, 2^18540741167 is an apocalyptic number.

18540741167 is a deficient number, since it is larger than the sum of its proper divisors (1426210873).

18540741167 is a wasteful number, since it uses less digits than its factorization.

18540741167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426210872.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 18540741167 in words is "eighteen billion, five hundred forty million, seven hundred forty-one thousand, one hundred sixty-seven".