18952133 has 2 divisors, whose sum is σ = 18952134. Its totient is φ = 18952132.

The previous prime is 18952097. The next prime is 18952147. The reversal of 18952133 is 33125981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15499969 + 3452164 = 3937^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 18952133 - 2¹⁸ = 18689989 is a prime.

It is a Sophie Germain 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 18952133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18952183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9476066 + 9476067.

It is an arithmetic number, because the mean of its divisors is an integer number (9476067).

Almost surely, 2^18952133 is an apocalyptic number.

It is an amenable number.

18952133 is a deficient number, since it is larger than the sum of its proper divisors (1).

18952133 is an equidigital number, since it uses as much as digits as its factorization.

18952133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 18952133 is about 4353.4047594957. The cubic root of 18952133 is about 266.6158915480.

The spelling of 18952133 in words is "eighteen million, nine hundred fifty-two thousand, one hundred thirty-three".