18950133263 has 2 divisors, whose sum is σ = 18950133264. Its totient is φ = 18950133262.

The previous prime is 18950133247. The next prime is 18950133283. The reversal of 18950133263 is 36233105981.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (36233105981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18950133263 - 2⁴ = 18950133247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18950133263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950133233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475066631 + 9475066632.

It is an arithmetic number, because the mean of its divisors is an integer number (9475066632).

Almost surely, 2^18950133263 is an apocalyptic number.

18950133263 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950133263 is an equidigital number, since it uses as much as digits as its factorization.

18950133263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 18950133263 in words is "eighteen billion, nine hundred fifty million, one hundred thirty-three thousand, two hundred sixty-three".