816965147 has 2 divisors, whose sum is σ = 816965148. Its totient is φ = 816965146.

The previous prime is 816965117. The next prime is 816965179. The reversal of 816965147 is 741569618.

816965147 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 816965147 - 2¹² = 816961051 is a prime.

It is not a weakly prime, because it can be changed into another prime (816965117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408482573 + 408482574.

It is an arithmetic number, because the mean of its divisors is an integer number (408482574).

Almost surely, 2^816965147 is an apocalyptic number.

816965147 is a deficient number, since it is larger than the sum of its proper divisors (1).

816965147 is an equidigital number, since it uses as much as digits as its factorization.

816965147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 816965147 is about 28582.6021733501. The cubic root of 816965147 is about 934.8340224126.

The spelling of 816965147 in words is "eight hundred sixteen million, nine hundred sixty-five thousand, one hundred forty-seven".