1118855593 has 2 divisors, whose sum is σ = 1118855594. Its totient is φ = 1118855592.

The previous prime is 1118855581. The next prime is 1118855611. The reversal of 1118855593 is 3955588111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598878784 + 519976809 = 24472^2 + 22803^2 .

It is an emirp because it is prime and its reverse (3955588111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1118855593 - 2⁹ = 1118855081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118855093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559427796 + 559427797.

It is an arithmetic number, because the mean of its divisors is an integer number (559427797).

Almost surely, 2^1118855593 is an apocalyptic number.

It is an amenable number.

1118855593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118855593 is an equidigital number, since it uses as much as digits as its factorization.

1118855593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 46.

The square root of 1118855593 is about 33449.2988416798. The cubic root of 1118855593 is about 1038.1449899126.

The spelling of 1118855593 in words is "one billion, one hundred eighteen million, eight hundred fifty-five thousand, five hundred ninety-three".