5243407691 has 4 divisors (see below), whose sum is σ = 5243934384. Its totient is φ = 5242881000.

The previous prime is 5243407667. The next prime is 5243407693. The reversal of 5243407691 is 1967043425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5243407691 - 2¹⁸ = 5243145547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5243407693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248120 + ... + 268421.

It is an arithmetic number, because the mean of its divisors is an integer number (1310983596).

Almost surely, 2^5243407691 is an apocalyptic number.

5243407691 is a deficient number, since it is larger than the sum of its proper divisors (526693).

5243407691 is a wasteful number, since it uses less digits than its factorization.

5243407691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526692.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 5243407691 is about 72411.3781874092. The cubic root of 5243407691 is about 1737.2855561024.

The spelling of 5243407691 in words is "five billion, two hundred forty-three million, four hundred seven thousand, six hundred ninety-one".