18241541 has 2 divisors, whose sum is σ = 18241542. Its totient is φ = 18241540.

The previous prime is 18241537. The next prime is 18241543. The reversal of 18241541 is 14514281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18241441 + 100 = 4271^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 18241541 - 2² = 18241537 is a prime.

Together with 18241543, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18241541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18241543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120770 + 9120771.

It is an arithmetic number, because the mean of its divisors is an integer number (9120771).

Almost surely, 2^18241541 is an apocalyptic number.

It is an amenable number.

18241541 is a deficient number, since it is larger than the sum of its proper divisors (1).

18241541 is an equidigital number, since it uses as much as digits as its factorization.

18241541 is an odious number, because the sum of its binary digits is odd.

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

The square root of 18241541 is about 4271.0117068442. The cubic root of 18241541 is about 263.2411874719.

The spelling of 18241541 in words is "eighteen million, two hundred forty-one thousand, five hundred forty-one".