18340541 has 4 divisors (see below), whose sum is σ = 18349632. Its totient is φ = 18331452.

The previous prime is 18340523. The next prime is 18340547. The reversal of 18340541 is 14504381.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18340541 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 18340541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340547) 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, 11 + ... + 6056.

It is an arithmetic number, because the mean of its divisors is an integer number (4587408).

Almost surely, 2^18340541 is an apocalyptic number.

It is an amenable number.

18340541 is a deficient number, since it is larger than the sum of its proper divisors (9091).

18340541 is an equidigital number, since it uses as much as digits as its factorization.

18340541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9090.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 18340541 is about 4282.5857843130. The cubic root of 18340541 is about 263.7165470475.

It can be divided in two parts, 18340 and 541, that added together give a palindrome (18881).

The spelling of 18340541 in words is "eighteen million, three hundred forty thousand, five hundred forty-one".