3816816805 has 16 divisors (see below), whose sum is σ = 4893209280. Its totient is φ = 2849565312.

The previous prime is 3816816803. The next prime is 3816816827. The reversal of 3816816805 is 5086186183.

It is a cyclic number.

It is not a de Polignac number, because 3816816805 - 2¹ = 3816816803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3816816803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293464 + ... + 306193.

It is an arithmetic number, because the mean of its divisors is an integer number (305825580).

Almost surely, 2^3816816805 is an apocalyptic number.

It is an amenable number.

3816816805 is a deficient number, since it is larger than the sum of its proper divisors (1076392475).

3816816805 is a wasteful number, since it uses less digits than its factorization.

3816816805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599748.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 3816816805 is about 61780.3917517524. The cubic root of 3816816805 is about 1562.7893341956.

It can be divided in two parts, 381 and 6816805, that added together give a palindrome (6817186).

The spelling of 3816816805 in words is "three billion, eight hundred sixteen million, eight hundred sixteen thousand, eight hundred five".