1155668867 has 2 divisors, whose sum is σ = 1155668868. Its totient is φ = 1155668866.

The previous prime is 1155668807. The next prime is 1155668873. The reversal of 1155668867 is 7688665511.

It is a strong prime.

It is an emirp because it is prime and its reverse (7688665511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1155668867 - 2⁶ = 1155668803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155668807) 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, 577834433 + 577834434.

It is an arithmetic number, because the mean of its divisors is an integer number (577834434).

Almost surely, 2^1155668867 is an apocalyptic number.

1155668867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155668867 is an equidigital number, since it uses as much as digits as its factorization.

1155668867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 53.

The square root of 1155668867 is about 33995.1300482878. The cubic root of 1155668867 is about 1049.4082431299.

The spelling of 1155668867 in words is "one billion, one hundred fifty-five million, six hundred sixty-eight thousand, eight hundred sixty-seven".