1151101165 has 4 divisors (see below), whose sum is σ = 1381321404. Its totient is φ = 920880928.

The previous prime is 1151101163. The next prime is 1151101177. The reversal of 1151101165 is 5611011511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 350550729 + 800550436 = 18723^2 + 28294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151101165 - 2¹ = 1151101163 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151101163) 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, 115110112 + ... + 115110121.

It is an arithmetic number, because the mean of its divisors is an integer number (345330351).

Almost surely, 2^1151101165 is an apocalyptic number.

It is an amenable number.

1151101165 is a deficient number, since it is larger than the sum of its proper divisors (230220239).

1151101165 is an equidigital number, since it uses as much as digits as its factorization.

1151101165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230220238.

The product of its (nonzero) digits is 150, while the sum is 22.

The square root of 1151101165 is about 33927.8818230670. The cubic root of 1151101165 is about 1048.0238462248.

Adding to 1151101165 its reverse (5611011511), we get a palindrome (6762112676).

The spelling of 1151101165 in words is "one billion, one hundred fifty-one million, one hundred one thousand, one hundred sixty-five".