1129668155 has 32 divisors (see below), whose sum is σ = 1697310720. Its totient is φ = 701205120.

The previous prime is 1129668143. The next prime is 1129668157. The reversal of 1129668155 is 5518669211.

It is not a de Polignac number, because 1129668155 - 2⁸ = 1129667899 is a prime.

It is a super-2 number, since 2×1129668155² = 2552300280842208050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1129668157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85877 + ... + 98153.

It is an arithmetic number, because the mean of its divisors is an integer number (53040960).

Almost surely, 2^1129668155 is an apocalyptic number.

1129668155 is a deficient number, since it is larger than the sum of its proper divisors (567642565).

1129668155 is a wasteful number, since it uses less digits than its factorization.

1129668155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12539.

The product of its digits is 129600, while the sum is 44.

The square root of 1129668155 is about 33610.5363688234. The cubic root of 1129668155 is about 1041.4784676604.

It can be divided in two parts, 112966 and 8155, that added together give a palindrome (121121).

The spelling of 1129668155 in words is "one billion, one hundred twenty-nine million, six hundred sixty-eight thousand, one hundred fifty-five".