1161124563 has 4 divisors (see below), whose sum is σ = 1548166088. Its totient is φ = 774083040.

The previous prime is 1161124553. The next prime is 1161124579. The reversal of 1161124563 is 3654211611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3654211611 = 3 ⋅1218070537.

It is not a de Polignac number, because 1161124563 - 2²² = 1156930259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161124563.

It is not an unprimeable number, because it can be changed into a prime (1161124553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193520758 + ... + 193520763.

It is an arithmetic number, because the mean of its divisors is an integer number (387041522).

Almost surely, 2^1161124563 is an apocalyptic number.

1161124563 is a deficient number, since it is larger than the sum of its proper divisors (387041525).

1161124563 is an equidigital number, since it uses as much as digits as its factorization.

1161124563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387041524.

The product of its digits is 4320, while the sum is 30.

The square root of 1161124563 is about 34075.2778858808. The cubic root of 1161124563 is about 1051.0570045214.

The spelling of 1161124563 in words is "one billion, one hundred sixty-one million, one hundred twenty-four thousand, five hundred sixty-three".