18343541 has 2 divisors, whose sum is σ = 18343542. Its totient is φ = 18343540.

The previous prime is 18343529. The next prime is 18343543. The reversal of 18343541 is 14534381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16728100 + 1615441 = 4090^2 + 1271^2 .

It is a cyclic number.

It is not a de Polignac number, because 18343541 - 2⁶ = 18343477 is a prime.

Together with 18343543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18343543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9171770 + 9171771.

It is an arithmetic number, because the mean of its divisors is an integer number (9171771).

Almost surely, 2^18343541 is an apocalyptic number.

It is an amenable number.

18343541 is a deficient number, since it is larger than the sum of its proper divisors (1).

18343541 is an equidigital number, since it uses as much as digits as its factorization.

18343541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 18343541 is about 4282.9360256721. The cubic root of 18343541 is about 263.7309251496.

The spelling of 18343541 in words is "eighteen million, three hundred forty-three thousand, five hundred forty-one".