1664012226 has 16 divisors (see below), whose sum is σ = 3329251200. Its totient is φ = 554466288.

The previous prime is 1664012219. The next prime is 1664012227. The reversal of 1664012226 is 6222104661.

It is a junction number, because it is equal to n+sod(n) for n = 1664012193 and 1664012202.

It is not an unprimeable number, because it can be changed into a prime (1664012227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32986 + ... + 66453.

It is an arithmetic number, because the mean of its divisors is an integer number (208078200).

Almost surely, 2^1664012226 is an apocalyptic number.

1664012226 is an abundant number, since it is smaller than the sum of its proper divisors (1665238974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1664012226 is a wasteful number, since it uses less digits than its factorization.

1664012226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102233.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1664012226 is about 40792.3059657088. The cubic root of 1664012226 is about 1185.0013295575.

Adding to 1664012226 its reverse (6222104661), we get a palindrome (7886116887).

The spelling of 1664012226 in words is "one billion, six hundred sixty-four million, twelve thousand, two hundred twenty-six".