838426819 has 2 divisors, whose sum is σ = 838426820. Its totient is φ = 838426818.

The previous prime is 838426817. The next prime is 838426867. The reversal of 838426819 is 918624838.

838426819 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 not a de Polignac number, because 838426819 - 2¹ = 838426817 is a prime.

It is a super-2 number, since 2×838426819² = 1405919061636917522, which contains 22 as substring.

Together with 838426817, 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 (838426817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419213409 + 419213410.

It is an arithmetic number, because the mean of its divisors is an integer number (419213410).

Almost surely, 2^838426819 is an apocalyptic number.

838426819 is a deficient number, since it is larger than the sum of its proper divisors (1).

838426819 is an equidigital number, since it uses as much as digits as its factorization.

838426819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 49.

The square root of 838426819 is about 28955.6008226388. The cubic root of 838426819 is about 942.9493972840.

The spelling of 838426819 in words is "eight hundred thirty-eight million, four hundred twenty-six thousand, eight hundred nineteen".