1163564443 has 2 divisors, whose sum is σ = 1163564444. Its totient is φ = 1163564442.

The previous prime is 1163564407. The next prime is 1163564449. The reversal of 1163564443 is 3444653611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1163564443 - 2²¹ = 1161467291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1163564449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581782221 + 581782222.

It is an arithmetic number, because the mean of its divisors is an integer number (581782222).

Almost surely, 2^1163564443 is an apocalyptic number.

1163564443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163564443 is an equidigital number, since it uses as much as digits as its factorization.

1163564443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 1163564443 is about 34111.0604203387. The cubic root of 1163564443 is about 1051.7926875265.

The spelling of 1163564443 in words is "one billion, one hundred sixty-three million, five hundred sixty-four thousand, four hundred forty-three".