9943901513 has 32 divisors (see below), whose sum is σ = 12382239744. Its totient is φ = 7775756352.

The previous prime is 9943901501. The next prime is 9943901563. The reversal of 9943901513 is 3151093499.

9943901513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9943901513 - 2⁴ = 9943901497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9943901563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5325206 + ... + 5327072.

It is an arithmetic number, because the mean of its divisors is an integer number (386944992).

Almost surely, 2^9943901513 is an apocalyptic number.

It is an amenable number.

9943901513 is a deficient number, since it is larger than the sum of its proper divisors (2438338231).

9943901513 is a wasteful number, since it uses less digits than its factorization.

9943901513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 9943901513 is about 99719.1130776844. The cubic root of 9943901513 is about 2150.3984488138.

The spelling of 9943901513 in words is "nine billion, nine hundred forty-three million, nine hundred one thousand, five hundred thirteen".