815346863 has 2 divisors, whose sum is σ = 815346864. Its totient is φ = 815346862.

The previous prime is 815346853. The next prime is 815346887. The reversal of 815346863 is 368643518.

815346863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815346863 - 2¹⁸ = 815084719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815346823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407673431 + 407673432.

It is an arithmetic number, because the mean of its divisors is an integer number (407673432).

Almost surely, 2^815346863 is an apocalyptic number.

815346863 is a deficient number, since it is larger than the sum of its proper divisors (1).

815346863 is an equidigital number, since it uses as much as digits as its factorization.

815346863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 815346863 is about 28554.2792414727. The cubic root of 815346863 is about 934.2163596147.

The spelling of 815346863 in words is "eight hundred fifteen million, three hundred forty-six thousand, eight hundred sixty-three".