1155303513 has 32 divisors (see below), whose sum is σ = 2106540800. Its totient is φ = 609389568.

The previous prime is 1155303511. The next prime is 1155303521. The reversal of 1155303513 is 3153035511.

1155303513 is a `hidden beast` number, since 115 + 5 + 30 + 3 + 513 = 666.

It is not a de Polignac number, because 1155303513 - 2¹ = 1155303511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1155303511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232648 + ... + 237561.

It is an arithmetic number, because the mean of its divisors is an integer number (65829400).

Almost surely, 2^1155303513 is an apocalyptic number.

1155303513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1155303513 is a deficient number, since it is larger than the sum of its proper divisors (951237287).

1155303513 is a wasteful number, since it uses less digits than its factorization.

1155303513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470238 (or 470232 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

The square root of 1155303513 is about 33989.7560008894. The cubic root of 1155303513 is about 1049.2976445780.

The spelling of 1155303513 in words is "one billion, one hundred fifty-five million, three hundred three thousand, five hundred thirteen".