163125643 has 2 divisors, whose sum is σ = 163125644. Its totient is φ = 163125642.

The previous prime is 163125623. The next prime is 163125661. The reversal of 163125643 is 346521361.

163125643 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 a cyclic number.

It is not a de Polignac number, because 163125643 - 2¹⁷ = 162994571 is a prime.

It is not a weakly prime, because it can be changed into another prime (163125623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81562821 + 81562822.

It is an arithmetic number, because the mean of its divisors is an integer number (81562822).

Almost surely, 2^163125643 is an apocalyptic number.

163125643 is a deficient number, since it is larger than the sum of its proper divisors (1).

163125643 is an equidigital number, since it uses as much as digits as its factorization.

163125643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 163125643 is about 12772.0649465934. The cubic root of 163125643 is about 546.3958752467.

The spelling of 163125643 in words is "one hundred sixty-three million, one hundred twenty-five thousand, six hundred forty-three".