1664028104 has 32 divisors (see below), whose sum is σ = 3331437120. Its totient is φ = 777327936.

The previous prime is 1664028103. The next prime is 1664028209. The reversal of 1664028104 is 4018204661.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1664028101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97247 + ... + 113070.

It is an arithmetic number, because the mean of its divisors is an integer number (104107410).

Almost surely, 2^1664028104 is an apocalyptic number.

It is an amenable number.

1664028104 is an abundant number, since it is smaller than the sum of its proper divisors (1667409016).

1664028104 is a wasteful number, since it uses less digits than its factorization.

1664028104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210389 (or 210385 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1664028104 is about 40792.5005852792. The cubic root of 1664028104 is about 1185.0050986387.

It can be divided in two parts, 16640 and 28104, that added together give a palindrome (44744).

The spelling of 1664028104 in words is "one billion, six hundred sixty-four million, twenty-eight thousand, one hundred four".