4000531513 has 4 divisors (see below), whose sum is σ = 4364216208. Its totient is φ = 3636846820.

The previous prime is 4000531489. The next prime is 4000531517. The reversal of 4000531513 is 3151350004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4000531513 - 2²¹ = 3998434361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000531517) 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, 181842331 + ... + 181842352.

It is an arithmetic number, because the mean of its divisors is an integer number (1091054052).

Almost surely, 2^4000531513 is an apocalyptic number.

It is an amenable number.

4000531513 is a deficient number, since it is larger than the sum of its proper divisors (363684695).

4000531513 is a wasteful number, since it uses less digits than its factorization.

4000531513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363684694.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 4000531513 is about 63249.7550430039. The cubic root of 4000531513 is about 1587.4713592121.

Adding to 4000531513 its reverse (3151350004), we get a palindrome (7151881517).

The spelling of 4000531513 in words is "four billion, five hundred thirty-one thousand, five hundred thirteen".