1600326561 has 16 divisors (see below), whose sum is σ = 2190240000. Its totient is φ = 1038987408.

The previous prime is 1600326529. The next prime is 1600326589. The reversal of 1600326561 is 1656230061.

1600326561 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1600326561 - 2⁵ = 1600326529 is a prime.

It is a super-2 number, since 2×1600326561² = 5122090203684173442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1600322561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23311 + ... + 61188.

It is an arithmetic number, because the mean of its divisors is an integer number (136890000).

Almost surely, 2^1600326561 is an apocalyptic number.

It is an amenable number.

1600326561 is a deficient number, since it is larger than the sum of its proper divisors (589913439).

1600326561 is a wasteful number, since it uses less digits than its factorization.

1600326561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84668.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1600326561 is about 40004.0818042359. The cubic root of 1600326561 is about 1169.6866623852.

The spelling of 1600326561 in words is "one billion, six hundred million, three hundred twenty-six thousand, five hundred sixty-one".