1601795520 has 336 divisors, whose sum is σ = 6124468320. Its totient is φ = 393928704.

The previous prime is 1601795497. The next prime is 1601795549. The reversal of 1601795520 is 255971061.

1601795520 is a `hidden beast` number, since 1 + 60 + 1 + 79 + 5 + 520 = 666.

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

It is a congruent number.

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, 1459612 + ... + 1460708.

Almost surely, 2^1601795520 is an apocalyptic number.

1601795520 is a gapful number since it is divisible by the number (10) 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 1601795520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3062234160).

1601795520 is an abundant number, since it is smaller than the sum of its proper divisors (4522672800).

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

1601795520 is a wasteful number, since it uses less digits than its factorization.

1601795520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1601795520 is about 40022.4377068664. The cubic root of 1601795520 is about 1170.0444427563.

The spelling of 1601795520 in words is "one billion, six hundred one million, seven hundred ninety-five thousand, five hundred twenty".