18519141 has 4 divisors (see below), whose sum is σ = 24692192. Its totient is φ = 12346092.

The previous prime is 18519133. The next prime is 18519157. The reversal of 18519141 is 14191581.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18519141 - 2³ = 18519133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18519099 and 18519108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18519041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3086521 + ... + 3086526.

It is an arithmetic number, because the mean of its divisors is an integer number (6173048).

Almost surely, 2^18519141 is an apocalyptic number.

It is an amenable number.

18519141 is a deficient number, since it is larger than the sum of its proper divisors (6173051).

18519141 is an equidigital number, since it uses as much as digits as its factorization.

18519141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6173050.

The product of its digits is 1440, while the sum is 30.

The square root of 18519141 is about 4303.3871543239. The cubic root of 18519141 is about 264.5698063448.

The spelling of 18519141 in words is "eighteen million, five hundred nineteen thousand, one hundred forty-one".