816968146 has 4 divisors (see below), whose sum is σ = 1225452222. Its totient is φ = 408484072.

The previous prime is 816968123. The next prime is 816968171. The reversal of 816968146 is 641869618.

816968146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 764246025 + 52722121 = 27645^2 + 7261^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 816968146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204242035 + ... + 204242038.

Almost surely, 2^816968146 is an apocalyptic number.

816968146 is a deficient number, since it is larger than the sum of its proper divisors (408484076).

816968146 is a wasteful number, since it uses less digits than its factorization.

816968146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408484075.

The product of its digits is 497664, while the sum is 49.

The square root of 816968146 is about 28582.6546352854. The cubic root of 816968146 is about 934.8351663062.

The spelling of 816968146 in words is "eight hundred sixteen million, nine hundred sixty-eight thousand, one hundred forty-six".