18132733 has 2 divisors, whose sum is σ = 18132734. Its totient is φ = 18132732.

The previous prime is 18132721. The next prime is 18132749. The reversal of 18132733 is 33723181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15705369 + 2427364 = 3963^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 18132733 - 2¹³ = 18124541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18132703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9066366 + 9066367.

It is an arithmetic number, because the mean of its divisors is an integer number (9066367).

Almost surely, 2^18132733 is an apocalyptic number.

It is an amenable number.

18132733 is a deficient number, since it is larger than the sum of its proper divisors (1).

18132733 is an equidigital number, since it uses as much as digits as its factorization.

18132733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 18132733 is about 4258.2546894238. The cubic root of 18132733 is about 262.7167455499.

The spelling of 18132733 in words is "eighteen million, one hundred thirty-two thousand, seven hundred thirty-three".