1156816043 has 2 divisors, whose sum is σ = 1156816044. Its totient is φ = 1156816042.

The previous prime is 1156816021. The next prime is 1156816091. The reversal of 1156816043 is 3406186511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1156816043 - 2⁸ = 1156815787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156815994 and 1156816012.

It is not a weakly prime, because it can be changed into another prime (1156816543) 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, 578408021 + 578408022.

It is an arithmetic number, because the mean of its divisors is an integer number (578408022).

Almost surely, 2^1156816043 is an apocalyptic number.

1156816043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156816043 is an equidigital number, since it uses as much as digits as its factorization.

1156816043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1156816043 is about 34011.9985152299. The cubic root of 1156816043 is about 1049.7553603906.

The spelling of 1156816043 in words is "one billion, one hundred fifty-six million, eight hundred sixteen thousand, forty-three".