1155850771 has 2 divisors, whose sum is σ = 1155850772. Its totient is φ = 1155850770.

The previous prime is 1155850727. The next prime is 1155850777. The reversal of 1155850771 is 1770585511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155850771 - 2⁹ = 1155850259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155850777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577925385 + 577925386.

It is an arithmetic number, because the mean of its divisors is an integer number (577925386).

Almost surely, 2^1155850771 is an apocalyptic number.

1155850771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155850771 is an equidigital number, since it uses as much as digits as its factorization.

1155850771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49000, while the sum is 40.

The square root of 1155850771 is about 33997.8053850539. The cubic root of 1155850771 is about 1049.4632997146.

The spelling of 1155850771 in words is "one billion, one hundred fifty-five million, eight hundred fifty thousand, seven hundred seventy-one".