1161503233 has 4 divisors (see below), whose sum is σ = 1267094448. Its totient is φ = 1055912020.

The previous prime is 1161503209. The next prime is 1161503261. The reversal of 1161503233 is 3323051611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1161503233 - 2⁵ = 1161503201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161503198 and 1161503207.

It is not an unprimeable number, because it can be changed into a prime (1161503263) 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, 52795591 + ... + 52795612.

It is an arithmetic number, because the mean of its divisors is an integer number (316773612).

Almost surely, 2^1161503233 is an apocalyptic number.

It is an amenable number.

1161503233 is a deficient number, since it is larger than the sum of its proper divisors (105591215).

1161503233 is a wasteful number, since it uses less digits than its factorization.

1161503233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105591214.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1161503233 is about 34080.8338072882. The cubic root of 1161503233 is about 1051.1712502306.

Adding to 1161503233 its reverse (3323051611), we get a palindrome (4484554844).

The spelling of 1161503233 in words is "one billion, one hundred sixty-one million, five hundred three thousand, two hundred thirty-three".