1117972643 has 2 divisors, whose sum is σ = 1117972644. Its totient is φ = 1117972642.

The previous prime is 1117972637. The next prime is 1117972663. The reversal of 1117972643 is 3462797111.

It is a weak prime.

It is an emirp because it is prime and its reverse (3462797111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1117972643 - 2¹² = 1117968547 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1117972643.

It is not a weakly prime, because it can be changed into another prime (1117972613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558986321 + 558986322.

It is an arithmetic number, because the mean of its divisors is an integer number (558986322).

Almost surely, 2^1117972643 is an apocalyptic number.

1117972643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117972643 is an equidigital number, since it uses as much as digits as its factorization.

1117972643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 1117972643 is about 33436.0979033140. The cubic root of 1117972643 is about 1037.8718324258.

The spelling of 1117972643 in words is "one billion, one hundred seventeen million, nine hundred seventy-two thousand, six hundred forty-three".