1115664631 has 2 divisors, whose sum is σ = 1115664632. Its totient is φ = 1115664630.

The previous prime is 1115664617. The next prime is 1115664679. The reversal of 1115664631 is 1364665111.

It is a weak prime.

It is an emirp because it is prime and its reverse (1364665111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115664631 - 2¹³ = 1115656439 is a prime.

It is a super-2 number, since 2×1115664631² = 2489415137728732322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115664601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557832315 + 557832316.

It is an arithmetic number, because the mean of its divisors is an integer number (557832316).

Almost surely, 2^1115664631 is an apocalyptic number.

1115664631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115664631 is an equidigital number, since it uses as much as digits as its factorization.

1115664631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 1115664631 is about 33401.5662956096. The cubic root of 1115664631 is about 1037.1571247300.

The spelling of 1115664631 in words is "one billion, one hundred fifteen million, six hundred sixty-four thousand, six hundred thirty-one".