164406443 has 2 divisors, whose sum is σ = 164406444. Its totient is φ = 164406442.

The previous prime is 164406421. The next prime is 164406457. The reversal of 164406443 is 344604461.

164406443 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 164406443 - 2⁶ = 164406379 is a prime.

It is a super-3 number, since 3×164406443³ (a number of 26 digits) contains 333 as substring.

It is equal to p_9207626 and since 164406443 and 9207626 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (164406413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82203221 + 82203222.

It is an arithmetic number, because the mean of its divisors is an integer number (82203222).

Almost surely, 2^164406443 is an apocalyptic number.

164406443 is a deficient number, since it is larger than the sum of its proper divisors (1).

164406443 is an equidigital number, since it uses as much as digits as its factorization.

164406443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 164406443 is about 12822.1075880684. The cubic root of 164406443 is about 547.8221791051.

The spelling of 164406443 in words is "one hundred sixty-four million, four hundred six thousand, four hundred forty-three".