816522146 has 16 divisors (see below), whose sum is σ = 1344643200. Its totient is φ = 368780880.

The previous prime is 816522143. The next prime is 816522163. The reversal of 816522146 is 641225618.

It is not an unprimeable number, because it can be changed into a prime (816522143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114746 + ... + 121653.

It is an arithmetic number, because the mean of its divisors is an integer number (84040200).

Almost surely, 2^816522146 is an apocalyptic number.

816522146 is a deficient number, since it is larger than the sum of its proper divisors (528121054).

816522146 is a wasteful number, since it uses less digits than its factorization.

816522146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236569.

The product of its digits is 23040, while the sum is 35.

The square root of 816522146 is about 28574.8516356603. The cubic root of 816522146 is about 934.6650199830.

The spelling of 816522146 in words is "eight hundred sixteen million, five hundred twenty-two thousand, one hundred forty-six".