1664920296 has 192 divisors, whose sum is σ = 5413262400. Its totient is φ = 456689664.

The previous prime is 1664920291. The next prime is 1664920331. The reversal of 1664920296 is 6920294661.

It is not an unprimeable number, because it can be changed into a prime (1664920291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 299575 + ... + 305081.

It is an arithmetic number, because the mean of its divisors is an integer number (28194075).

Almost surely, 2^1664920296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1664920296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2706631200).

1664920296 is an abundant number, since it is smaller than the sum of its proper divisors (3748342104).

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

1664920296 is a wasteful number, since it uses less digits than its factorization.

1664920296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568 (or 5561 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1664920296 is about 40803.4348554138. The cubic root of 1664920296 is about 1185.2168464990.

The spelling of 1664920296 in words is "one billion, six hundred sixty-four million, nine hundred twenty thousand, two hundred ninety-six".