4191940513 has 4 divisors (see below), whose sum is σ = 4209931908. Its totient is φ = 4173949120.

The previous prime is 4191940499. The next prime is 4191940537. The reversal of 4191940513 is 3150491914.

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 2521747089 + 1670193424 = 50217^2 + 40868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4191940513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4191940213) 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, 8995348 + ... + 8995813.

It is an arithmetic number, because the mean of its divisors is an integer number (1052482977).

Almost surely, 2^4191940513 is an apocalyptic number.

It is an amenable number.

4191940513 is a deficient number, since it is larger than the sum of its proper divisors (17991395).

4191940513 is a wasteful number, since it uses less digits than its factorization.

4191940513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17991394.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 4191940513 is about 64745.1968334331. The cubic root of 4191940513 is about 1612.3959687547.

The spelling of 4191940513 in words is "four billion, one hundred ninety-one million, nine hundred forty thousand, five hundred thirteen".