1111559993 has 2 divisors, whose sum is σ = 1111559994. Its totient is φ = 1111559992.

The previous prime is 1111559971. The next prime is 1111560001. The reversal of 1111559993 is 3999551111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096404544 + 15155449 = 33112^2 + 3893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111559993 - 2⁸ = 1111559737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111559923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555779996 + 555779997.

It is an arithmetic number, because the mean of its divisors is an integer number (555779997).

Almost surely, 2^1111559993 is an apocalyptic number.

It is an amenable number.

1111559993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111559993 is an equidigital number, since it uses as much as digits as its factorization.

1111559993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54675, while the sum is 44.

The square root of 1111559993 is about 33340.0658817585. The cubic root of 1111559993 is about 1035.8836279124.

The spelling of 1111559993 in words is "one billion, one hundred eleven million, five hundred fifty-nine thousand, nine hundred ninety-three".