1311166634 has 16 divisors (see below), whose sum is σ = 2040232320. Its totient is φ = 631494240.

The previous prime is 1311166627. The next prime is 1311166639. The reversal of 1311166634 is 4366611131.

It is a super-2 number, since 2×1311166634² = 3438315884229779912, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311166634.

It is not an unprimeable number, because it can be changed into a prime (1311166639) 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, 94724 + ... + 107679.

It is an arithmetic number, because the mean of its divisors is an integer number (127514520).

Almost surely, 2^1311166634 is an apocalyptic number.

1311166634 is a deficient number, since it is larger than the sum of its proper divisors (729065686).

1311166634 is a wasteful number, since it uses less digits than its factorization.

1311166634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202525.

The product of its digits is 7776, while the sum is 32.

The square root of 1311166634 is about 36210.0349903173. The cubic root of 1311166634 is about 1094.5088973224.

Adding to 1311166634 its reverse (4366611131), we get a palindrome (5677777765).

The spelling of 1311166634 in words is "one billion, three hundred eleven million, one hundred sixty-six thousand, six hundred thirty-four".