1639468322 has 6 divisors (see below), whose sum is σ = 2459288379. Its totient is φ = 819705530.

The previous prime is 1639468309. The next prime is 1639468349. The reversal of 1639468322 is 2238649361.

It can be written as a sum of positive squares in only one way, i.e., 819734161 + 819734161 = 28631^2 + 28631^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=28631.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42947 + ... + 71577.

Almost surely, 2^1639468322 is an apocalyptic number.

1639468322 is a deficient number, since it is larger than the sum of its proper divisors (819820057).

1639468322 is an frugal number, since it uses more digits than its factorization.

1639468322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57264 (or 28633 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 1639468322 is about 40490.3485043041. The cubic root of 1639468322 is about 1179.1462564383.

Multiplying 1639468322 by its product of digits (373248), we get a square (611928272249856 = 24737184²).

The spelling of 1639468322 in words is "one billion, six hundred thirty-nine million, four hundred sixty-eight thousand, three hundred twenty-two".