1115980205 has 4 divisors (see below), whose sum is σ = 1339176252. Its totient is φ = 892784160.

The previous prime is 1115980163. The next prime is 1115980211. The reversal of 1115980205 is 5020895111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 606439876 + 509540329 = 24626^2 + 22573^2 .

It is not a de Polignac number, because 1115980205 - 2⁶ = 1115980141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111598016 + ... + 111598025.

It is an arithmetic number, because the mean of its divisors is an integer number (334794063).

Almost surely, 2^1115980205 is an apocalyptic number.

It is an amenable number.

1115980205 is a deficient number, since it is larger than the sum of its proper divisors (223196047).

1115980205 is an equidigital number, since it uses as much as digits as its factorization.

1115980205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223196046.

The product of its (nonzero) digits is 3600, while the sum is 32.

The square root of 1115980205 is about 33406.2899017535. The cubic root of 1115980205 is about 1037.2549047015.

The spelling of 1115980205 in words is "one billion, one hundred fifteen million, nine hundred eighty thousand, two hundred five".