18754133 has 2 divisors, whose sum is σ = 18754134. Its totient is φ = 18754132.

The previous prime is 18754123. The next prime is 18754147. The reversal of 18754133 is 33145781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18335524 + 418609 = 4282^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 18754133 - 2⁴ = 18754117 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18754133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18754123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9377066 + 9377067.

It is an arithmetic number, because the mean of its divisors is an integer number (9377067).

Almost surely, 2^18754133 is an apocalyptic number.

It is an amenable number.

18754133 is a deficient number, since it is larger than the sum of its proper divisors (1).

18754133 is an equidigital number, since it uses as much as digits as its factorization.

18754133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 18754133 is about 4330.6042303586. The cubic root of 18754133 is about 265.6841607188.

The spelling of 18754133 in words is "eighteen million, seven hundred fifty-four thousand, one hundred thirty-three".