1155135015 has 36 divisors (see below), whose sum is σ = 2050028136. Its totient is φ = 601701408.

The previous prime is 1155134999. The next prime is 1155135017. The reversal of 1155135015 is 5105315511.

1155135015 is a `hidden beast` number, since 1 + 155 + 1 + 3 + 501 + 5 = 666.

It is not a de Polignac number, because 1155135015 - 2⁴ = 1155134999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1155135015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155135017) 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 35 ways as a sum of consecutive naturals, for example, 76264 + ... + 90146.

It is an arithmetic number, because the mean of its divisors is an integer number (56945226).

Almost surely, 2^1155135015 is an apocalyptic number.

1155135015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1155135015 is a deficient number, since it is larger than the sum of its proper divisors (894893121).

1155135015 is a wasteful number, since it uses less digits than its factorization.

1155135015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13980 (or 13934 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 27.

The square root of 1155135015 is about 33987.2772519365. The cubic root of 1155135015 is about 1049.2466296574.

The spelling of 1155135015 in words is "one billion, one hundred fifty-five million, one hundred thirty-five thousand, fifteen".