816194420963 has 8 divisors (see below), whose sum is σ = 816917383296. Its totient is φ = 815471697600.

The previous prime is 816194420927. The next prime is 816194420969. The reversal of 816194420963 is 369024491618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 816194420963 - 2³⁸ = 541316514019 is a prime.

It is a super-2 number, since 2×816194420963² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816194420969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7156103 + ... + 7269263.

It is an arithmetic number, because the mean of its divisors is an integer number (102114672912).

Almost surely, 2^816194420963 is an apocalyptic number.

816194420963 is a deficient number, since it is larger than the sum of its proper divisors (722962333).

816194420963 is a wasteful number, since it uses less digits than its factorization.

816194420963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119485.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 816194420963 in words is "eight hundred sixteen billion, one hundred ninety-four million, four hundred twenty thousand, nine hundred sixty-three".