1161254163 has 16 divisors (see below), whose sum is σ = 1603008000. Its totient is φ = 746877600.

The previous prime is 1161254147. The next prime is 1161254219. The reversal of 1161254163 is 3614521611.

It is a happy number.

It is not a de Polignac number, because 1161254163 - 2⁴ = 1161254147 is a prime.

It is a super-2 number, since 2×1161254163² = 2697022462169661138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1161254163.

It is not an unprimeable number, because it can be changed into a prime (1161254123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121638 + ... + 130836.

It is an arithmetic number, because the mean of its divisors is an integer number (100188000).

Almost surely, 2^1161254163 is an apocalyptic number.

1161254163 is a deficient number, since it is larger than the sum of its proper divisors (441753837).

1161254163 is a wasteful number, since it uses less digits than its factorization.

1161254163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682.

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

The square root of 1161254163 is about 34077.1795047654. The cubic root of 1161254163 is about 1051.0961079689.

Adding to 1161254163 its reverse (3614521611), we get a palindrome (4775775774).

The spelling of 1161254163 in words is "one billion, one hundred sixty-one million, two hundred fifty-four thousand, one hundred sixty-three".