163845839 has 2 divisors, whose sum is σ = 163845840. Its totient is φ = 163845838.

The previous prime is 163845823. The next prime is 163845883. The reversal of 163845839 is 938548361.

163845839 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 163845839 - 2⁴ = 163845823 is a prime.

It is a super-2 number, since 2×163845839² = 53690917915227842, 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 = 163845793 and 163845802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163842839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81922919 + 81922920.

It is an arithmetic number, because the mean of its divisors is an integer number (81922920).

Almost surely, 2^163845839 is an apocalyptic number.

163845839 is a deficient number, since it is larger than the sum of its proper divisors (1).

163845839 is an equidigital number, since it uses as much as digits as its factorization.

163845839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 163845839 is about 12800.2280839054. The cubic root of 163845839 is about 547.1988032171.

The spelling of 163845839 in words is "one hundred sixty-three million, eight hundred forty-five thousand, eight hundred thirty-nine".