1135540165 has 4 divisors (see below), whose sum is σ = 1362648204. Its totient is φ = 908432128.

The previous prime is 1135540157. The next prime is 1135540169. The reversal of 1135540165 is 5610455311.

It is a happy number.

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 258373476 + 877166689 = 16074^2 + 29617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135540165 - 2³ = 1135540157 is a prime.

It is a Smith number, since the sum of its digits (31) 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 (1135540169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113554012 + ... + 113554021.

It is an arithmetic number, because the mean of its divisors is an integer number (340662051).

Almost surely, 2^1135540165 is an apocalyptic number.

It is an amenable number.

1135540165 is a deficient number, since it is larger than the sum of its proper divisors (227108039).

1135540165 is an equidigital number, since it uses as much as digits as its factorization.

1135540165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227108038.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1135540165 is about 33697.7768554544. The cubic root of 1135540165 is about 1043.2798834730.

Adding to 1135540165 its reverse (5610455311), we get a palindrome (6745995476).

The spelling of 1135540165 in words is "one billion, one hundred thirty-five million, five hundred forty thousand, one hundred sixty-five".