1664444662 has 8 divisors (see below), whose sum is σ = 2496949992. Its totient is φ = 832128000.

The previous prime is 1664444659. The next prime is 1664444689. The reversal of 1664444662 is 2664444661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22539 + ... + 61942.

It is an arithmetic number, because the mean of its divisors is an integer number (312118749).

Almost surely, 2^1664444662 is an apocalyptic number.

1664444662 is a deficient number, since it is larger than the sum of its proper divisors (832505330).

1664444662 is an equidigital number, since it uses as much as digits as its factorization.

1664444662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94334.

The product of its digits is 663552, while the sum is 43.

The square root of 1664444662 is about 40797.6060817298. The cubic root of 1664444662 is about 1185.1039716021.

Subtracting 1664444662 from its reverse (2664444661), we obtain a palindrome (999999999).

The spelling of 1664444662 in words is "one billion, six hundred sixty-four million, four hundred forty-four thousand, six hundred sixty-two".