1155418027 has 2 divisors, whose sum is σ = 1155418028. Its totient is φ = 1155418026.

The previous prime is 1155418021. The next prime is 1155418031. The reversal of 1155418027 is 7208145511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155418027 - 2¹¹ = 1155415979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155417983 and 1155418001.

It is not a weakly prime, because it can be changed into another prime (1155418021) 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, 577709013 + 577709014.

It is an arithmetic number, because the mean of its divisors is an integer number (577709014).

Almost surely, 2^1155418027 is an apocalyptic number.

1155418027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155418027 is an equidigital number, since it uses as much as digits as its factorization.

1155418027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 1155418027 is about 33991.4404961014. The cubic root of 1155418027 is about 1049.3323123223.

The spelling of 1155418027 in words is "one billion, one hundred fifty-five million, four hundred eighteen thousand, twenty-seven".