1664326322 has 8 divisors (see below), whose sum is σ = 2605032576. Its totient is φ = 795982132.

The previous prime is 1664326303. The next prime is 1664326361. The reversal of 1664326322 is 2236234661.

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

It is a super-2 number, since 2×1664326322² = 5539964212204095368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18090458 + ... + 18090549.

It is an arithmetic number, because the mean of its divisors is an integer number (325629072).

Almost surely, 2^1664326322 is an apocalyptic number.

1664326322 is a deficient number, since it is larger than the sum of its proper divisors (940706254).

1664326322 is a wasteful number, since it uses less digits than its factorization.

1664326322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36181032.

The product of its digits is 62208, while the sum is 35.

The square root of 1664326322 is about 40796.1557257544. The cubic root of 1664326322 is about 1185.0758844507.

The spelling of 1664326322 in words is "one billion, six hundred sixty-four million, three hundred twenty-six thousand, three hundred twenty-two".