1604671344 has 120 divisors (see below), whose sum is σ = 4893260720. Its totient is φ = 503387136.

The previous prime is 1604671333. The next prime is 1604671351. The reversal of 1604671344 is 4431764061.

1604671344 is a `hidden beast` number, since 1 + 60 + 467 + 134 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1604671299 and 1604671308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118422 + ... + 131274.

Almost surely, 2^1604671344 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 1604671344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2446630360).

1604671344 is an abundant number, since it is smaller than the sum of its proper divisors (3288589376).

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

1604671344 is a wasteful number, since it uses less digits than its factorization.

1604671344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12904 (or 12875 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1604671344 is about 40058.3492420744. The cubic root of 1604671344 is about 1170.7442470562.

The spelling of 1604671344 in words is "one billion, six hundred four million, six hundred seventy-one thousand, three hundred forty-four".