18341893 has 2 divisors, whose sum is σ = 18341894. Its totient is φ = 18341892.

The previous prime is 18341887. The next prime is 18341909. The reversal of 18341893 is 39814381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11035684 + 7306209 = 3322^2 + 2703^2 .

It is a cyclic number.

It is not a de Polignac number, because 18341893 - 2¹⁷ = 18210821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18341293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9170946 + 9170947.

It is an arithmetic number, because the mean of its divisors is an integer number (9170947).

Almost surely, 2^18341893 is an apocalyptic number.

It is an amenable number.

18341893 is a deficient number, since it is larger than the sum of its proper divisors (1).

18341893 is an equidigital number, since it uses as much as digits as its factorization.

18341893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 18341893 is about 4282.7436299643. The cubic root of 18341893 is about 263.7230269729.

The spelling of 18341893 in words is "eighteen million, three hundred forty-one thousand, eight hundred ninety-three".