2115993563 has 2 divisors, whose sum is σ = 2115993564. Its totient is φ = 2115993562.

The previous prime is 2115993541. The next prime is 2115993611. The reversal of 2115993563 is 3653995112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2115993563 - 2¹⁸ = 2115731419 is a prime.

It is not a weakly prime, because it can be changed into another prime (2115993163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057996781 + 1057996782.

It is an arithmetic number, because the mean of its divisors is an integer number (1057996782).

Almost surely, 2^2115993563 is an apocalyptic number.

2115993563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115993563 is an equidigital number, since it uses as much as digits as its factorization.

2115993563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 218700, while the sum is 44.

The square root of 2115993563 is about 45999.9300325555. The cubic root of 2115993563 is about 1283.8219027753.

The spelling of 2115993563 in words is "two billion, one hundred fifteen million, nine hundred ninety-three thousand, five hundred sixty-three".