1659444384 has 192 divisors, whose sum is σ = 4931297280. Its totient is φ = 485084160.

The previous prime is 1659444383. The next prime is 1659444403. The reversal of 1659444384 is 4834449561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1659444383) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2282229 + ... + 2282955.

It is an arithmetic number, because the mean of its divisors is an integer number (25683840).

Almost surely, 2^1659444384 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 1659444384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2465648640).

1659444384 is an abundant number, since it is smaller than the sum of its proper divisors (3271852896).

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

1659444384 is a wasteful number, since it uses less digits than its factorization.

1659444384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 835 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 1659444384 is about 40736.2784750890. The cubic root of 1659444384 is about 1183.9160291678.

The spelling of 1659444384 in words is "one billion, six hundred fifty-nine million, four hundred forty-four thousand, three hundred eighty-four".