820258916 has 6 divisors (see below), whose sum is σ = 1435453110. Its totient is φ = 410129456.

The previous prime is 820258889. The next prime is 820258919. The reversal of 820258916 is 619852028.

It can be written as a sum of positive squares in only one way, i.e., 812022016 + 8236900 = 28496^2 + 2870^2 .

It is not an unprimeable number, because it can be changed into a prime (820258919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102532361 + ... + 102532368.

It is an arithmetic number, because the mean of its divisors is an integer number (239242185).

Almost surely, 2^820258916 is an apocalyptic number.

It is an amenable number.

820258916 is a deficient number, since it is larger than the sum of its proper divisors (615194194).

820258916 is a wasteful number, since it uses less digits than its factorization.

820258916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205064733 (or 205064731 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 820258916 is about 28640.1626392030. The cubic root of 820258916 is about 936.0886652924.

The spelling of 820258916 in words is "eight hundred twenty million, two hundred fifty-eight thousand, nine hundred sixteen".