1156811063 has 2 divisors, whose sum is σ = 1156811064. Its totient is φ = 1156811062.

The previous prime is 1156811057. The next prime is 1156811081. The reversal of 1156811063 is 3601186511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1156811063 - 2⁶ = 1156810999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156811003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578405531 + 578405532.

It is an arithmetic number, because the mean of its divisors is an integer number (578405532).

Almost surely, 2^1156811063 is an apocalyptic number.

1156811063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156811063 is an equidigital number, since it uses as much as digits as its factorization.

1156811063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1156811063 is about 34011.9253056924. The cubic root of 1156811063 is about 1049.7538540176.

Adding to 1156811063 its reverse (3601186511), we get a palindrome (4757997574).

The spelling of 1156811063 in words is "one billion, one hundred fifty-six million, eight hundred eleven thousand, sixty-three".