164622433 has 2 divisors, whose sum is σ = 164622434. Its totient is φ = 164622432.

The previous prime is 164622427. The next prime is 164622463. The reversal of 164622433 is 334226461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 73839649 = 9528^2 + 8593^2 .

It is an emirp because it is prime and its reverse (334226461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164622433 - 2⁵ = 164622401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164622395 and 164622404.

It is not a weakly prime, because it can be changed into another prime (164622413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82311216 + 82311217.

It is an arithmetic number, because the mean of its divisors is an integer number (82311217).

Almost surely, 2^164622433 is an apocalyptic number.

It is an amenable number.

164622433 is a deficient number, since it is larger than the sum of its proper divisors (1).

164622433 is an equidigital number, since it uses as much as digits as its factorization.

164622433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 164622433 is about 12830.5273858871. The cubic root of 164622433 is about 548.0619757370.

Adding to 164622433 its reverse (334226461), we get a palindrome (498848894).

The spelling of 164622433 in words is "one hundred sixty-four million, six hundred twenty-two thousand, four hundred thirty-three".