1664144504 has 32 divisors (see below), whose sum is σ = 3405853440. Its totient is φ = 756002400.

The previous prime is 1664144473. The next prime is 1664144527. The reversal of 1664144504 is 4054414661.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193169 + ... + 201599.

It is an arithmetic number, because the mean of its divisors is an integer number (106432920).

Almost surely, 2^1664144504 is an apocalyptic number.

It is an amenable number.

1664144504 is an abundant number, since it is smaller than the sum of its proper divisors (1741708936).

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

1664144504 is a wasteful number, since it uses less digits than its factorization.

1664144504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10691 (or 10687 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1664144504 is about 40793.9272931646. The cubic root of 1664144504 is about 1185.0327286563.

The spelling of 1664144504 in words is "one billion, six hundred sixty-four million, one hundred forty-four thousand, five hundred four".