163643743 has 2 divisors, whose sum is σ = 163643744. Its totient is φ = 163643742.

The previous prime is 163643693. The next prime is 163643747. The reversal of 163643743 is 347346361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163643743 - 2⁹ = 163643231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163643747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81821871 + 81821872.

It is an arithmetic number, because the mean of its divisors is an integer number (81821872).

Almost surely, 2^163643743 is an apocalyptic number.

163643743 is a deficient number, since it is larger than the sum of its proper divisors (1).

163643743 is an equidigital number, since it uses as much as digits as its factorization.

163643743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 37.

The square root of 163643743 is about 12792.3314137807. The cubic root of 163643743 is about 546.9737294750.

The spelling of 163643743 in words is "one hundred sixty-three million, six hundred forty-three thousand, seven hundred forty-three".