1115445513 has 32 divisors (see below), whose sum is σ = 1910071296. Its totient is φ = 562782528.

The previous prime is 1115445449. The next prime is 1115445523. The reversal of 1115445513 is 3155445111.

It is not a de Polignac number, because 1115445513 - 2⁶ = 1115445449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115445523) 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, 82545 + ... + 95102.

It is an arithmetic number, because the mean of its divisors is an integer number (59689728).

Almost surely, 2^1115445513 is an apocalyptic number.

1115445513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1115445513 is a deficient number, since it is larger than the sum of its proper divisors (794625783).

1115445513 is a wasteful number, since it uses less digits than its factorization.

1115445513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177693.

The product of its digits is 6000, while the sum is 30.

The square root of 1115445513 is about 33398.2860787796. The cubic root of 1115445513 is about 1037.0892206101.

The spelling of 1115445513 in words is "one billion, one hundred fifteen million, four hundred forty-five thousand, five hundred thirteen".