1159211505 has 16 divisors (see below), whose sum is σ = 1857470400. Its totient is φ = 617335488.

The previous prime is 1159211503. The next prime is 1159211509. The reversal of 1159211505 is 5051129511.

It is not a de Polignac number, because 1159211505 - 2¹ = 1159211503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1159211503) 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 15 ways as a sum of consecutive naturals, for example, 46330 + ... + 66819.

It is an arithmetic number, because the mean of its divisors is an integer number (116091900).

Almost surely, 2^1159211505 is an apocalyptic number.

1159211505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1159211505 is a deficient number, since it is larger than the sum of its proper divisors (698258895).

1159211505 is a wasteful number, since it uses less digits than its factorization.

1159211505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113840.

The product of its (nonzero) digits is 2250, while the sum is 30.

The square root of 1159211505 is about 34047.1952589343. The cubic root of 1159211505 is about 1050.4794499749.

The spelling of 1159211505 in words is "one billion, one hundred fifty-nine million, two hundred eleven thousand, five hundred five".