18412541 has 4 divisors (see below), whose sum is σ = 21042912. Its totient is φ = 15782172.

The previous prime is 18412529. The next prime is 18412549. The reversal of 18412541 is 14521481.

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 18412541 - 2¹⁸ = 18150397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18412541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412549) 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, 1315175 + ... + 1315188.

It is an arithmetic number, because the mean of its divisors is an integer number (5260728).

Almost surely, 2^18412541 is an apocalyptic number.

It is an amenable number.

18412541 is a deficient number, since it is larger than the sum of its proper divisors (2630371).

18412541 is an equidigital number, since it uses as much as digits as its factorization.

18412541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630370.

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

The square root of 18412541 is about 4290.9836867553. The cubic root of 18412541 is about 264.0611897114.

The spelling of 18412541 in words is "eighteen million, four hundred twelve thousand, five hundred forty-one".