1659225984 has 128 divisors (see below), whose sum is σ = 4762951200. Its totient is φ = 508747776.

The previous prime is 1659225973. The next prime is 1659226033. The reversal of 1659225984 is 4895229561.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2540602 + ... + 2541254.

Almost surely, 2^1659225984 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 1659225984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2381475600).

1659225984 is an abundant number, since it is smaller than the sum of its proper divisors (3103725216).

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

1659225984 is a wasteful number, since it uses less digits than its factorization.

1659225984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1180 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The square root of 1659225984 is about 40733.5977296384. The cubic root of 1659225984 is about 1183.8640883681.

The spelling of 1659225984 in words is "one billion, six hundred fifty-nine million, two hundred twenty-five thousand, nine hundred eighty-four".