18542141 has 4 divisors (see below), whose sum is σ = 18551484. Its totient is φ = 18532800.

The previous prime is 18542129. The next prime is 18542201. The reversal of 18542141 is 14124581.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14661241 + 3880900 = 3829^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 18542141 - 2¹⁴ = 18525757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18542141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18542441) 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, 380 + ... + 6101.

It is an arithmetic number, because the mean of its divisors is an integer number (4637871).

Almost surely, 2^18542141 is an apocalyptic number.

It is an amenable number.

18542141 is a deficient number, since it is larger than the sum of its proper divisors (9343).

18542141 is an equidigital number, since it uses as much as digits as its factorization.

18542141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342.

The product of its digits is 1280, while the sum is 26.

The square root of 18542141 is about 4306.0586387090. The cubic root of 18542141 is about 264.6792892510.

The spelling of 18542141 in words is "eighteen million, five hundred forty-two thousand, one hundred forty-one".