1165211126 has 16 divisors (see below), whose sum is σ = 1816214400. Its totient is φ = 559987008.

The previous prime is 1165211123. The next prime is 1165211147. The reversal of 1165211126 is 6211125611.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1165211095 and 1165211104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165211123) 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 7 ways as a sum of consecutive naturals, for example, 32111 + ... + 57978.

It is an arithmetic number, because the mean of its divisors is an integer number (113513400).

Almost surely, 2^1165211126 is an apocalyptic number.

1165211126 is a deficient number, since it is larger than the sum of its proper divisors (651003274).

1165211126 is a wasteful number, since it uses less digits than its factorization.

1165211126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90343.

The product of its digits is 720, while the sum is 26.

The square root of 1165211126 is about 34135.1889697421. The cubic root of 1165211126 is about 1052.2886213098.

Adding to 1165211126 its reverse (6211125611), we get a palindrome (7376336737).

The spelling of 1165211126 in words is "one billion, one hundred sixty-five million, two hundred eleven thousand, one hundred twenty-six".