1601016001 has 8 divisors (see below), whose sum is σ = 1724613800. Its totient is φ = 1477481472.

The previous prime is 1601015989. The next prime is 1601016007. The reversal of 1601016001 is 1006101061.

It can be written as a sum of positive squares in 4 ways, for example, as 158155776 + 1442860225 = 12576^2 + 37985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1601016001 - 2⁷ = 1601015873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1601016007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45601 + ... + 72673.

It is an arithmetic number, because the mean of its divisors is an integer number (215576725).

Almost surely, 2^1601016001 is an apocalyptic number.

It is an amenable number.

1601016001 is a deficient number, since it is larger than the sum of its proper divisors (123597799).

1601016001 is a wasteful number, since it uses less digits than its factorization.

1601016001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31635.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1601016001 is about 40012.6979970109. The cubic root of 1601016001 is about 1169.8546099807.

Adding to 1601016001 its reverse (1006101061), we get a palindrome (2607117062).

The spelling of 1601016001 in words is "one billion, six hundred one million, sixteen thousand, one".