806401019 has 2 divisors, whose sum is σ = 806401020. Its totient is φ = 806401018.

The previous prime is 806401007. The next prime is 806401033. The reversal of 806401019 is 910104608.

806401019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806401019 is a prime.

It is a super-2 number, since 2×806401019² = 1300565206888476722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 806400982 and 806401000.

It is not a weakly prime, because it can be changed into another prime (806401039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403200509 + 403200510.

It is an arithmetic number, because the mean of its divisors is an integer number (403200510).

Almost surely, 2^806401019 is an apocalyptic number.

806401019 is a deficient number, since it is larger than the sum of its proper divisors (1).

806401019 is an equidigital number, since it uses as much as digits as its factorization.

806401019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 806401019 is about 28397.2009007930. The cubic root of 806401019 is about 930.7871006401.

The spelling of 806401019 in words is "eight hundred six million, four hundred one thousand, nineteen".