838537823 has 2 divisors, whose sum is σ = 838537824. Its totient is φ = 838537822.

The previous prime is 838537769. The next prime is 838537831. The reversal of 838537823 is 328735838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 838537823 - 2⁶ = 838537759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838537853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419268911 + 419268912.

It is an arithmetic number, because the mean of its divisors is an integer number (419268912).

Almost surely, 2^838537823 is an apocalyptic number.

838537823 is a deficient number, since it is larger than the sum of its proper divisors (1).

838537823 is an equidigital number, since it uses as much as digits as its factorization.

838537823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The square root of 838537823 is about 28957.5175558956. The cubic root of 838537823 is about 942.9910095565.

The spelling of 838537823 in words is "eight hundred thirty-eight million, five hundred thirty-seven thousand, eight hundred twenty-three".