18344093 has 2 divisors, whose sum is σ = 18344094. Its totient is φ = 18344092.

The previous prime is 18344083. The next prime is 18344107. The reversal of 18344093 is 39044381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 4 = 4283^2 + 2^2 .

It is an emirp because it is prime and its reverse (39044381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18344093 - 2²² = 14149789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18344023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9172046 + 9172047.

It is an arithmetic number, because the mean of its divisors is an integer number (9172047).

Almost surely, 2^18344093 is an apocalyptic number.

It is an amenable number.

18344093 is a deficient number, since it is larger than the sum of its proper divisors (1).

18344093 is an equidigital number, since it uses as much as digits as its factorization.

18344093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 18344093 is about 4283.0004669624. Note that the first 3 decimals coincide. The cubic root of 18344093 is about 263.7335705496.

The spelling of 18344093 in words is "eighteen million, three hundred forty-four thousand, ninety-three".