1664134848 has 112 divisors (see below), whose sum is σ = 4931420160. Its totient is φ = 550271232.

The previous prime is 1664134831. The next prime is 1664134859. The reversal of 1664134848 is 8484314661.

1664134848 is a `hidden beast` number, since 166 + 4 + 1 + 3 + 484 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 215665 + ... + 223247.

Almost surely, 2^1664134848 is an apocalyptic number.

1664134848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1664134848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2465710080).

1664134848 is an abundant number, since it is smaller than the sum of its proper divisors (3267285312).

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

1664134848 is a wasteful number, since it uses less digits than its factorization.

1664134848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731 (or 7715 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 1664134848 is about 40793.8089420441. The cubic root of 1664134848 is about 1185.0304366481.

The spelling of 1664134848 in words is "one billion, six hundred sixty-four million, one hundred thirty-four thousand, eight hundred forty-eight".