163839941 has 2 divisors, whose sum is σ = 163839942. Its totient is φ = 163839940.

The previous prime is 163839911. The next prime is 163839967. The reversal of 163839941 is 149938361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147719716 + 16120225 = 12154^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 163839941 - 2¹⁴ = 163823557 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 163839892 and 163839901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163839901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81919970 + 81919971.

It is an arithmetic number, because the mean of its divisors is an integer number (81919971).

Almost surely, 2^163839941 is an apocalyptic number.

It is an amenable number.

163839941 is a deficient number, since it is larger than the sum of its proper divisors (1).

163839941 is an equidigital number, since it uses as much as digits as its factorization.

163839941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 163839941 is about 12799.9976953123. The cubic root of 163839941 is about 547.1922372539.

The spelling of 163839941 in words is "one hundred sixty-three million, eight hundred thirty-nine thousand, nine hundred forty-one".