18799933 has 2 divisors, whose sum is σ = 18799934. Its totient is φ = 18799932.

The previous prime is 18799903. The next prime is 18799951. The reversal of 18799933 is 33999781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10517049 + 8282884 = 3243^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 18799933 - 2¹⁷ = 18668861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18799903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9399966 + 9399967.

It is an arithmetic number, because the mean of its divisors is an integer number (9399967).

Almost surely, 2^18799933 is an apocalyptic number.

It is an amenable number.

18799933 is a deficient number, since it is larger than the sum of its proper divisors (1).

18799933 is an equidigital number, since it uses as much as digits as its factorization.

18799933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 49.

The square root of 18799933 is about 4335.8889515300. Note that the first 3 decimals coincide. The cubic root of 18799933 is about 265.9002631717.

The spelling of 18799933 in words is "eighteen million, seven hundred ninety-nine thousand, nine hundred thirty-three".