163957043 has 2 divisors, whose sum is σ = 163957044. Its totient is φ = 163957042.

The previous prime is 163956997. The next prime is 163957069. The reversal of 163957043 is 340759361.

It is a happy number.

163957043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (340759361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163957043 - 2⁸ = 163956787 is a prime.

It is equal to p_9183953 and since 163957043 and 9183953 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 163956988 and 163957006.

It is not a weakly prime, because it can be changed into another prime (163957243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81978521 + 81978522.

It is an arithmetic number, because the mean of its divisors is an integer number (81978522).

Almost surely, 2^163957043 is an apocalyptic number.

163957043 is a deficient number, since it is larger than the sum of its proper divisors (1).

163957043 is an equidigital number, since it uses as much as digits as its factorization.

163957043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 163957043 is about 12804.5711759512. The cubic root of 163957043 is about 547.3225718657.

The spelling of 163957043 in words is "one hundred sixty-three million, nine hundred fifty-seven thousand, forty-three".