1155108863 has 2 divisors, whose sum is σ = 1155108864. Its totient is φ = 1155108862.

The previous prime is 1155108853. The next prime is 1155108901. The reversal of 1155108863 is 3688015511.

It is a happy number.

It is an a-pointer prime, because the next prime (1155108901) can be obtained adding 1155108863 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (3688015511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1155108863 - 2¹⁶ = 1155043327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155108803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577554431 + 577554432.

It is an arithmetic number, because the mean of its divisors is an integer number (577554432).

Almost surely, 2^1155108863 is an apocalyptic number.

1155108863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155108863 is an equidigital number, since it uses as much as digits as its factorization.

1155108863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1155108863 is about 33986.8925175574. The cubic root of 1155108863 is about 1049.2387113608.

The spelling of 1155108863 in words is "one billion, one hundred fifty-five million, one hundred eight thousand, eight hundred sixty-three".