1161573133 has 8 divisors (see below), whose sum is σ = 1327780352. Its totient is φ = 995432976.

The previous prime is 1161573107. The next prime is 1161573139. The reversal of 1161573133 is 3313751611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161573133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161573095 and 1161573104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161573139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28516 + ... + 56002.

It is an arithmetic number, because the mean of its divisors is an integer number (165972544).

Almost surely, 2^1161573133 is an apocalyptic number.

It is an amenable number.

1161573133 is a deficient number, since it is larger than the sum of its proper divisors (166207219).

1161573133 is an equidigital number, since it uses as much as digits as its factorization.

1161573133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33531.

The product of its digits is 5670, while the sum is 31.

The square root of 1161573133 is about 34081.8592949387. The cubic root of 1161573133 is about 1051.1923365248.

It can be divided in two parts, 11615 and 73133, that added together give a palindrome (84748).

The spelling of 1161573133 in words is "one billion, one hundred sixty-one million, five hundred seventy-three thousand, one hundred thirty-three".