2001515013 has 6 divisors (see below), whose sum is σ = 2891077254. Its totient is φ = 1334343336.

The previous prime is 2001515003. The next prime is 2001515027. The reversal of 2001515013 is 3105151002.

It can be written as a sum of positive squares in only one way, i.e., 1622317284 + 379197729 = 40278^2 + 19473^2 .

It is not a de Polignac number, because 2001515013 - 2²⁵ = 1967960581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001515003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111195270 + ... + 111195287.

It is an arithmetic number, because the mean of its divisors is an integer number (481846209).

Almost surely, 2^2001515013 is an apocalyptic number.

It is an amenable number.

2001515013 is a deficient number, since it is larger than the sum of its proper divisors (889562241).

2001515013 is a wasteful number, since it uses less digits than its factorization.

2001515013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222390563 (or 222390560 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 2001515013 is about 44738.2947037546. The cubic root of 2001515013 is about 1260.2391023944.

Adding to 2001515013 its reverse (3105151002), we get a palindrome (5106666015).

The spelling of 2001515013 in words is "two billion, one million, five hundred fifteen thousand, thirteen".