1963605263 has 2 divisors, whose sum is σ = 1963605264. Its totient is φ = 1963605262.

The previous prime is 1963605229. The next prime is 1963605269. The reversal of 1963605263 is 3625063691.

It is a strong prime.

It is an emirp because it is prime and its reverse (3625063691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1963605263 - 2⁶ = 1963605199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1963605263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1963605269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981802631 + 981802632.

It is an arithmetic number, because the mean of its divisors is an integer number (981802632).

Almost surely, 2^1963605263 is an apocalyptic number.

1963605263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963605263 is an equidigital number, since it uses as much as digits as its factorization.

1963605263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 1963605263 is about 44312.5858306644. The cubic root of 1963605263 is about 1252.2318023152.

The spelling of 1963605263 in words is "one billion, nine hundred sixty-three million, six hundred five thousand, two hundred sixty-three".