1689485616 has 240 divisors, whose sum is σ = 6008504320. Its totient is φ = 431101440.

The previous prime is 1689485579. The next prime is 1689485621. The reversal of 1689485616 is 6165849861.

1689485616 is a `hidden beast` number, since 16 + 8 + 9 + 4 + 8 + 5 + 616 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 404145 + ... + 408303.

Almost surely, 2^1689485616 is an apocalyptic number.

1689485616 is a gapful number since it is divisible by the number (16) 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 1689485616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3004252160).

1689485616 is an abundant number, since it is smaller than the sum of its proper divisors (4319018704).

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

1689485616 is a wasteful number, since it uses less digits than its factorization.

1689485616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4215 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 1689485616 is about 41103.3528559411. The cubic root of 1689485616 is about 1191.0175643048.

The spelling of 1689485616 in words is "one billion, six hundred eighty-nine million, four hundred eighty-five thousand, six hundred sixteen".