164383643 has 2 divisors, whose sum is σ = 164383644. Its totient is φ = 164383642.

The previous prime is 164383633. The next prime is 164383651. The reversal of 164383643 is 346383461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164383643 - 2⁴ = 164383627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164383597 and 164383606.

It is not a weakly prime, because it can be changed into another prime (164383603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82191821 + 82191822.

It is an arithmetic number, because the mean of its divisors is an integer number (82191822).

Almost surely, 2^164383643 is an apocalyptic number.

164383643 is a deficient number, since it is larger than the sum of its proper divisors (1).

164383643 is an equidigital number, since it uses as much as digits as its factorization.

164383643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The square root of 164383643 is about 12821.2184678368. The cubic root of 164383643 is about 547.7968538139.

The spelling of 164383643 in words is "one hundred sixty-four million, three hundred eighty-three thousand, six hundred forty-three".