18719041 has 4 divisors (see below), whose sum is σ = 20420784. Its totient is φ = 17017300.

The previous prime is 18719039. The next prime is 18719053. The reversal of 18719041 is 14091781.

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 a cyclic number.

It is not a de Polignac number, because 18719041 - 2¹ = 18719039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18718994 and 18719012.

It is not an unprimeable number, because it can be changed into a prime (18719011) 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, 850855 + ... + 850876.

It is an arithmetic number, because the mean of its divisors is an integer number (5105196).

Almost surely, 2^18719041 is an apocalyptic number.

18719041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18719041 is a deficient number, since it is larger than the sum of its proper divisors (1701743).

18719041 is a wasteful number, since it uses less digits than its factorization.

18719041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701742.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 18719041 is about 4326.5507046607. The cubic root of 18719041 is about 265.5183446503.

The spelling of 18719041 in words is "eighteen million, seven hundred nineteen thousand, forty-one".