816441268 has 6 divisors (see below), whose sum is σ = 1428772226. Its totient is φ = 408220632.

The previous prime is 816441257. The next prime is 816441287. The reversal of 816441268 is 862144618.

It can be written as a sum of positive squares in only one way, i.e., 743543824 + 72897444 = 27268^2 + 8538^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 816441268.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102055155 + ... + 102055162.

Almost surely, 2^816441268 is an apocalyptic number.

It is an amenable number.

816441268 is a deficient number, since it is larger than the sum of its proper divisors (612330958).

816441268 is a wasteful number, since it uses less digits than its factorization.

816441268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204110321 (or 204110319 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 816441268 is about 28573.4364051649. The cubic root of 816441268 is about 934.6341588754.

The spelling of 816441268 in words is "eight hundred sixteen million, four hundred forty-one thousand, two hundred sixty-eight".