813888011 has 2 divisors, whose sum is σ = 813888012. Its totient is φ = 813888010.

The previous prime is 813887969. The next prime is 813888013. The reversal of 813888011 is 110888318.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813888011 - 2¹⁸ = 813625867 is a prime.

It is a super-2 number, since 2×813888011² = 1324827388899072242, which contains 22 as substring.

Together with 813888013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (813888013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406944005 + 406944006.

It is an arithmetic number, because the mean of its divisors is an integer number (406944006).

Almost surely, 2^813888011 is an apocalyptic number.

813888011 is a deficient number, since it is larger than the sum of its proper divisors (1).

813888011 is an equidigital number, since it uses as much as digits as its factorization.

813888011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 38.

The square root of 813888011 is about 28528.7225616571. The cubic root of 813888011 is about 933.6588475840.

The spelling of 813888011 in words is "eight hundred thirteen million, eight hundred eighty-eight thousand, eleven".