3805111508813 has 2 divisors, whose sum is σ = 3805111508814. Its totient is φ = 3805111508812.

The previous prime is 3805111508789. The next prime is 3805111508851. The reversal of 3805111508813 is 3188051115083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3435528976324 + 369582532489 = 1853518^2 + 607933^2 .

It is a cyclic number.

It is not a de Polignac number, because 3805111508813 - 2¹² = 3805111504717 is a prime.

It is a super-2 number, since 2×3805111508813² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3805111558813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902555754406 + 1902555754407.

It is an arithmetic number, because the mean of its divisors is an integer number (1902555754407).

Almost surely, 2^{3805111508813} is an apocalyptic number.

It is an amenable number.

3805111508813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3805111508813 is an equidigital number, since it uses as much as digits as its factorization.

3805111508813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 44.

The spelling of 3805111508813 in words is "three trillion, eight hundred five billion, one hundred eleven million, five hundred eight thousand, eight hundred thirteen".