18349043 has 2 divisors, whose sum is σ = 18349044. Its totient is φ = 18349042.

The previous prime is 18349031. The next prime is 18349049. The reversal of 18349043 is 34094381.

It is a strong prime.

It is an emirp because it is prime and its reverse (34094381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18349043 - 2¹⁸ = 18086899 is a prime.

It is not a weakly prime, because it can be changed into another prime (18349049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9174521 + 9174522.

It is an arithmetic number, because the mean of its divisors is an integer number (9174522).

Almost surely, 2^18349043 is an apocalyptic number.

18349043 is a deficient number, since it is larger than the sum of its proper divisors (1).

18349043 is an equidigital number, since it uses as much as digits as its factorization.

18349043 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 18349043 is about 4283.5782939034. The cubic root of 18349043 is about 263.7572905152.

The spelling of 18349043 in words is "eighteen million, three hundred forty-nine thousand, forty-three".