1155163775 has 6 divisors (see below), whose sum is σ = 1432403112. Its totient is φ = 924131000.

The previous prime is 1155163759. The next prime is 1155163777. The reversal of 1155163775 is 5773615511.

It is not a de Polignac number, because 1155163775 - 2⁴ = 1155163759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155163777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23103251 + ... + 23103300.

It is an arithmetic number, because the mean of its divisors is an integer number (238733852).

Almost surely, 2^1155163775 is an apocalyptic number.

1155163775 is a deficient number, since it is larger than the sum of its proper divisors (277239337).

1155163775 is an equidigital number, since it uses as much as digits as its factorization.

1155163775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46206561 (or 46206556 counting only the distinct ones).

The product of its digits is 110250, while the sum is 41.

The square root of 1155163775 is about 33987.7003488027. The cubic root of 1155163775 is about 1049.2553374657.

The spelling of 1155163775 in words is "one billion, one hundred fifty-five million, one hundred sixty-three thousand, seven hundred seventy-five".