1601110001 has 4 divisors (see below), whose sum is σ = 1603748352. Its totient is φ = 1598471652.

The previous prime is 1601109931. The next prime is 1601110009. The reversal of 1601110001 is 1000111061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1601110001 - 2¹⁴ = 1601093617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601110009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1318265 + ... + 1319478.

It is an arithmetic number, because the mean of its divisors is an integer number (400937088).

Almost surely, 2^1601110001 is an apocalyptic number.

It is an amenable number.

1601110001 is a deficient number, since it is larger than the sum of its proper divisors (2638351).

1601110001 is an equidigital number, since it uses as much as digits as its factorization.

1601110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638350.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1601110001 is about 40013.8726068847. The cubic root of 1601110001 is about 1169.8775046470.

Adding to 1601110001 its reverse (1000111061), we get a palindrome (2601221062).

The spelling of 1601110001 in words is "one billion, six hundred one million, one hundred ten thousand, one".