189953333263 has 2 divisors, whose sum is σ = 189953333264. Its totient is φ = 189953333262.

The previous prime is 189953333243. The next prime is 189953333281. The reversal of 189953333263 is 362333359981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189953333263 - 2²⁵ = 189919778831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189953333233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94976666631 + 94976666632.

It is an arithmetic number, because the mean of its divisors is an integer number (94976666632).

Almost surely, 2^189953333263 is an apocalyptic number.

189953333263 is a deficient number, since it is larger than the sum of its proper divisors (1).

189953333263 is an equidigital number, since it uses as much as digits as its factorization.

189953333263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9447840, while the sum is 55.

The spelling of 189953333263 in words is "one hundred eighty-nine billion, nine hundred fifty-three million, three hundred thirty-three thousand, two hundred sixty-three".