1115415913 has 2 divisors, whose sum is σ = 1115415914. Its totient is φ = 1115415912.

The previous prime is 1115415911. The next prime is 1115415941. The reversal of 1115415913 is 3195145111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005333849 + 110082064 = 31707^2 + 10492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115415913 - 2¹ = 1115415911 is a prime.

Together with 1115415911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1115415911) 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 as a sum of consecutive naturals, namely, 557707956 + 557707957.

It is an arithmetic number, because the mean of its divisors is an integer number (557707957).

Almost surely, 2^1115415913 is an apocalyptic number.

It is an amenable number.

1115415913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115415913 is an equidigital number, since it uses as much as digits as its factorization.

1115415913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 31.

The square root of 1115415913 is about 33397.8429393277. The cubic root of 1115415913 is about 1037.0800469624.

The spelling of 1115415913 in words is "one billion, one hundred fifteen million, four hundred fifteen thousand, nine hundred thirteen".