1601656852 has 18 divisors (see below), whose sum is σ = 2822519742. Its totient is φ = 795229344.

The previous prime is 1601656831. The next prime is 1601656871. The reversal of 1601656852 is 2586561061.

It can be written as a sum of positive squares in 3 ways, for example, as 1976836 + 1599680016 = 1406^2 + 39996^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1002118 + ... + 1003714.

Almost surely, 2^1601656852 is an apocalyptic number.

It is an amenable number.

1601656852 is a deficient number, since it is larger than the sum of its proper divisors (1220862890).

1601656852 is an equidigital number, since it uses as much as digits as its factorization.

1601656852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 1601656852 is about 40020.7052911365. The cubic root of 1601656852 is about 1170.0106780626.

The spelling of 1601656852 in words is "one billion, six hundred one million, six hundred fifty-six thousand, eight hundred fifty-two".