1145605163 has 4 divisors (see below), whose sum is σ = 1212993720. Its totient is φ = 1078216608.

The previous prime is 1145605159. The next prime is 1145605177. The reversal of 1145605163 is 3615065411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3615065411 = 23 ⋅157176757.

It is a cyclic number.

It is not a de Polignac number, because 1145605163 - 2² = 1145605159 is a prime.

It is a super-2 number, since 2×1145605163² = 2624822378984513138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145605103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33694253 + ... + 33694286.

It is an arithmetic number, because the mean of its divisors is an integer number (303248430).

Almost surely, 2^1145605163 is an apocalyptic number.

1145605163 is a deficient number, since it is larger than the sum of its proper divisors (67388557).

1145605163 is an equidigital number, since it uses as much as digits as its factorization.

1145605163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67388556.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1145605163 is about 33846.7895523342. The cubic root of 1145605163 is about 1046.3532335436.

The spelling of 1145605163 in words is "one billion, one hundred forty-five million, six hundred five thousand, one hundred sixty-three".