1161163023 has 4 divisors (see below), whose sum is σ = 1548217368. Its totient is φ = 774108680.

The previous prime is 1161163021. The next prime is 1161163043. The reversal of 1161163023 is 3203611611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1161163023 - 2¹ = 1161163021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1161162984 and 1161163002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161163021) 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, 193527168 + ... + 193527173.

It is an arithmetic number, because the mean of its divisors is an integer number (387054342).

Almost surely, 2^1161163023 is an apocalyptic number.

1161163023 is a deficient number, since it is larger than the sum of its proper divisors (387054345).

1161163023 is an equidigital number, since it uses as much as digits as its factorization.

1161163023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387054344.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1161163023 is about 34075.8422199657. The cubic root of 1161163023 is about 1051.0686091351.

Adding to 1161163023 its reverse (3203611611), we get a palindrome (4364774634).

The spelling of 1161163023 in words is "one billion, one hundred sixty-one million, one hundred sixty-three thousand, twenty-three".