1601004101 has 4 divisors (see below), whose sum is σ = 1601827500. Its totient is φ = 1600180704.

The previous prime is 1601004091. The next prime is 1601004149. The reversal of 1601004101 is 1014001061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1416016900 + 184987201 = 37630^2 + 13601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1601004101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601004161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 408776 + ... + 412673.

It is an arithmetic number, because the mean of its divisors is an integer number (400456875).

Almost surely, 2^1601004101 is an apocalyptic number.

It is an amenable number.

1601004101 is a deficient number, since it is larger than the sum of its proper divisors (823399).

1601004101 is an equidigital number, since it uses as much as digits as its factorization.

1601004101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823398.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1601004101 is about 40012.5492939403. The cubic root of 1601004101 is about 1169.8517115495.

Adding to 1601004101 its reverse (1014001061), we get a palindrome (2615005162).

The spelling of 1601004101 in words is "one billion, six hundred one million, four thousand, one hundred one".