3805368643 has 2 divisors, whose sum is σ = 3805368644. Its totient is φ = 3805368642.

The previous prime is 3805368641. The next prime is 3805368683. The reversal of 3805368643 is 3468635083.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3805368643 - 2¹ = 3805368641 is a prime.

It is a super-2 number, since 2×3805368643² = 28961661018255322898, which contains 22 as substring.

Together with 3805368641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3805368593 and 3805368602.

It is not a weakly prime, because it can be changed into another prime (3805368641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902684321 + 1902684322.

It is an arithmetic number, because the mean of its divisors is an integer number (1902684322).

Almost surely, 2^3805368643 is an apocalyptic number.

3805368643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3805368643 is an equidigital number, since it uses as much as digits as its factorization.

3805368643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The square root of 3805368643 is about 61687.6701051353. The cubic root of 3805368643 is about 1561.2252924176.

The spelling of 3805368643 in words is "three billion, eight hundred five million, three hundred sixty-eight thousand, six hundred forty-three".