1005640963 has 2 divisors, whose sum is σ = 1005640964. Its totient is φ = 1005640962.

The previous prime is 1005640943. The next prime is 1005640969. The reversal of 1005640963 is 3690465001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005640963 - 2⁵ = 1005640931 is a prime.

It is a super-2 number, since 2×1005640963² = 2022627492927134738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005640969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502820481 + 502820482.

It is an arithmetic number, because the mean of its divisors is an integer number (502820482).

Almost surely, 2^1005640963 is an apocalyptic number.

1005640963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005640963 is an equidigital number, since it uses as much as digits as its factorization.

1005640963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1005640963 is about 31711.8426301595. The cubic root of 1005640963 is about 1001.8767964316.

The spelling of 1005640963 in words is "one billion, five million, six hundred forty thousand, nine hundred sixty-three".