4001512513 has 4 divisors (see below), whose sum is σ = 4236895620. Its totient is φ = 3766129408.

The previous prime is 4001512483. The next prime is 4001512549. The reversal of 4001512513 is 3152151004.

It is a happy number.

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 1906894224 + 2094618289 = 43668^2 + 45767^2 .

It is not a de Polignac number, because 4001512513 - 2¹³ = 4001504321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001512583) 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, 117691528 + ... + 117691561.

It is an arithmetic number, because the mean of its divisors is an integer number (1059223905).

Almost surely, 2^4001512513 is an apocalyptic number.

It is an amenable number.

4001512513 is a deficient number, since it is larger than the sum of its proper divisors (235383107).

4001512513 is a wasteful number, since it uses less digits than its factorization.

4001512513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235383106.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 4001512513 is about 63257.5095383939. The cubic root of 4001512513 is about 1587.6011071488.

Adding to 4001512513 its reverse (3152151004), we get a palindrome (7153663517).

The spelling of 4001512513 in words is "four billion, one million, five hundred twelve thousand, five hundred thirteen".