18196733 has 2 divisors, whose sum is σ = 18196734. Its totient is φ = 18196732.

The previous prime is 18196709. The next prime is 18196753. The reversal of 18196733 is 33769181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15578809 + 2617924 = 3947^2 + 1618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18196733 is a prime.

It is a super-2 number, since 2×18196733² = 662242183746578, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18196753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9098366 + 9098367.

It is an arithmetic number, because the mean of its divisors is an integer number (9098367).

Almost surely, 2^18196733 is an apocalyptic number.

It is an amenable number.

18196733 is a deficient number, since it is larger than the sum of its proper divisors (1).

18196733 is an equidigital number, since it uses as much as digits as its factorization.

18196733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 18196733 is about 4265.7628860498. The cubic root of 18196733 is about 263.0254713725.

The spelling of 18196733 in words is "eighteen million, one hundred ninety-six thousand, seven hundred thirty-three".