820159463 has 2 divisors, whose sum is σ = 820159464. Its totient is φ = 820159462.

The previous prime is 820159421. The next prime is 820159481. The reversal of 820159463 is 364951028.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820159463 - 2¹⁶ = 820093927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820159363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410079731 + 410079732.

It is an arithmetic number, because the mean of its divisors is an integer number (410079732).

Almost surely, 2^820159463 is an apocalyptic number.

820159463 is a deficient number, since it is larger than the sum of its proper divisors (1).

820159463 is an equidigital number, since it uses as much as digits as its factorization.

820159463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 820159463 is about 28638.4263359564. The cubic root of 820159463 is about 936.0508314707.

The spelling of 820159463 in words is "eight hundred twenty million, one hundred fifty-nine thousand, four hundred sixty-three".