166493443 has 2 divisors, whose sum is σ = 166493444. Its totient is φ = 166493442.

The previous prime is 166493407. The next prime is 166493471. The reversal of 166493443 is 344394661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166493443 - 2¹³ = 166485251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166493396 and 166493405.

It is not a weakly prime, because it can be changed into another prime (166493473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83246721 + 83246722.

It is an arithmetic number, because the mean of its divisors is an integer number (83246722).

Almost surely, 2^166493443 is an apocalyptic number.

166493443 is a deficient number, since it is larger than the sum of its proper divisors (1).

166493443 is an equidigital number, since it uses as much as digits as its factorization.

166493443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 40.

The square root of 166493443 is about 12903.2338194733. The cubic root of 166493443 is about 550.1304847432.

The spelling of 166493443 in words is "one hundred sixty-six million, four hundred ninety-three thousand, four hundred forty-three".