1115906647 has 2 divisors, whose sum is σ = 1115906648. Its totient is φ = 1115906646.

The previous prime is 1115906621. The next prime is 1115906657. The reversal of 1115906647 is 7466095111.

It is a strong prime.

It is an emirp because it is prime and its reverse (7466095111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115906647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115906657) 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 as a sum of consecutive naturals, namely, 557953323 + 557953324.

It is an arithmetic number, because the mean of its divisors is an integer number (557953324).

Almost surely, 2^1115906647 is an apocalyptic number.

1115906647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115906647 is an equidigital number, since it uses as much as digits as its factorization.

1115906647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1115906647 is about 33405.1889232796. The cubic root of 1115906647 is about 1037.2321145503.

The spelling of 1115906647 in words is "one billion, one hundred fifteen million, nine hundred six thousand, six hundred forty-seven".