2001013817 has 8 divisors (see below), whose sum is σ = 2183539680. Its totient is φ = 1818590560.

The previous prime is 2001013813. The next prime is 2001013867. The reversal of 2001013817 is 7183101002.

It is a happy number.

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 2001013817 - 2² = 2001013813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001013792 and 2001013801.

It is not an unprimeable number, because it can be changed into a prime (2001013813) 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, 18434 + ... + 65892.

It is an arithmetic number, because the mean of its divisors is an integer number (272942460).

Almost surely, 2^2001013817 is an apocalyptic number.

It is an amenable number.

2001013817 is a deficient number, since it is larger than the sum of its proper divisors (182525863).

2001013817 is a wasteful number, since it uses less digits than its factorization.

2001013817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51303.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 2001013817 is about 44732.6929325745. The cubic root of 2001013817 is about 1260.1339021632.

Adding to 2001013817 its reverse (7183101002), we get a palindrome (9184114819).

The spelling of 2001013817 in words is "two billion, one million, thirteen thousand, eight hundred seventeen".