1606643112 has 64 divisors (see below), whose sum is σ = 4120346880. Its totient is φ = 521818112.

The previous prime is 1606643069. The next prime is 1606643147. The reversal of 1606643112 is 2113466061.

It is a self number, because there is not a number n which added to its sum of digits gives 1606643112.

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, 259768 + ... + 265880.

It is an arithmetic number, because the mean of its divisors is an integer number (64380420).

Almost surely, 2^1606643112 is an apocalyptic number.

1606643112 is a gapful number since it is divisible by the number (12) 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 1606643112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2060173440).

1606643112 is an abundant number, since it is smaller than the sum of its proper divisors (2513703768).

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

1606643112 is a wasteful number, since it uses less digits than its factorization.

1606643112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402 (or 6398 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1606643112 is about 40082.9528852354. The cubic root of 1606643112 is about 1171.2235749439.

The spelling of 1606643112 in words is "one billion, six hundred six million, six hundred forty-three thousand, one hundred twelve".