1115664023 has 2 divisors, whose sum is σ = 1115664024. Its totient is φ = 1115664022.

The previous prime is 1115664019. The next prime is 1115664091. The reversal of 1115664023 is 3204665111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115664023 - 2² = 1115664019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115664323) 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, 557832011 + 557832012.

It is an arithmetic number, because the mean of its divisors is an integer number (557832012).

Almost surely, 2^1115664023 is an apocalyptic number.

1115664023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115664023 is an equidigital number, since it uses as much as digits as its factorization.

1115664023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1115664023 is about 33401.5571942387. The cubic root of 1115664023 is about 1037.1569363246.

The spelling of 1115664023 in words is "one billion, one hundred fifteen million, six hundred sixty-four thousand, twenty-three".