1601722113 has 32 divisors (see below), whose sum is σ = 2273443200. Its totient is φ = 1001280000.

The previous prime is 1601722091. The next prime is 1601722123. The reversal of 1601722113 is 3112271061.

It is not a de Polignac number, because 1601722113 - 2⁶ = 1601722049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1601722123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 894423 + ... + 896211.

It is an arithmetic number, because the mean of its divisors is an integer number (71045100).

Almost surely, 2^1601722113 is an apocalyptic number.

It is an amenable number.

1601722113 is a deficient number, since it is larger than the sum of its proper divisors (671721087).

1601722113 is a wasteful number, since it uses less digits than its factorization.

1601722113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1601722113 is about 40021.5206232847. The cubic root of 1601722113 is about 1170.0265689050.

Adding to 1601722113 its reverse (3112271061), we get a palindrome (4713993174).

The spelling of 1601722113 in words is "one billion, six hundred one million, seven hundred twenty-two thousand, one hundred thirteen".