1155636155 has 16 divisors (see below), whose sum is σ = 1412186400. Its totient is φ = 907618560.

The previous prime is 1155636121. The next prime is 1155636161. The reversal of 1155636155 is 5516365511.

It is not a de Polignac number, because 1155636155 - 2⁶ = 1155636091 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 170216 + ... + 176874.

It is an arithmetic number, because the mean of its divisors is an integer number (88261650).

Almost surely, 2^1155636155 is an apocalyptic number.

1155636155 is a deficient number, since it is larger than the sum of its proper divisors (256550245).

1155636155 is an equidigital number, since it uses as much as digits as its factorization.

1155636155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294.

The product of its digits is 67500, while the sum is 38.

The square root of 1155636155 is about 33994.6489171458. The cubic root of 1155636155 is about 1049.3983416298.

The spelling of 1155636155 in words is "one billion, one hundred fifty-five million, six hundred thirty-six thousand, one hundred fifty-five".