18494033 has 2 divisors, whose sum is σ = 18494034. Its totient is φ = 18494032.

The previous prime is 18493997. The next prime is 18494051. The reversal of 18494033 is 33049481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17707264 + 786769 = 4208^2 + 887^2 .

It is an emirp because it is prime and its reverse (33049481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18494033 - 2¹² = 18489937 is a prime.

It is not a weakly prime, because it can be changed into another prime (18494053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9247016 + 9247017.

It is an arithmetic number, because the mean of its divisors is an integer number (9247017).

Almost surely, 2^18494033 is an apocalyptic number.

It is an amenable number.

18494033 is a deficient number, since it is larger than the sum of its proper divisors (1).

18494033 is an equidigital number, since it uses as much as digits as its factorization.

18494033 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 18494033 is about 4300.4689279194. The cubic root of 18494033 is about 264.4501855509.

The spelling of 18494033 in words is "eighteen million, four hundred ninety-four thousand, thirty-three".