18141911 has 4 divisors (see below), whose sum is σ = 18191712. Its totient is φ = 18092112.

The previous prime is 18141889. The next prime is 18141931. The reversal of 18141911 is 11914181.

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 18141911 - 2²² = 13947607 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 (18141931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24350 + ... + 25083.

It is an arithmetic number, because the mean of its divisors is an integer number (4547928).

Almost surely, 2^18141911 is an apocalyptic number.

18141911 is a deficient number, since it is larger than the sum of its proper divisors (49801).

18141911 is an equidigital number, since it uses as much as digits as its factorization.

18141911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49800.

The product of its digits is 288, while the sum is 26.

The square root of 18141911 is about 4259.3322246568. The cubic root of 18141911 is about 262.7610633331.

The spelling of 18141911 in words is "eighteen million, one hundred forty-one thousand, nine hundred eleven".