5238571691 has 4 divisors (see below), whose sum is σ = 5244348312. Its totient is φ = 5232795072.

The previous prime is 5238571661. The next prime is 5238571693. The reversal of 5238571691 is 1961758325.

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 5238571691 - 2⁶ = 5238571627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5238571693) 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, 2886950 + ... + 2888763.

It is an arithmetic number, because the mean of its divisors is an integer number (1311087078).

Almost surely, 2^5238571691 is an apocalyptic number.

5238571691 is a deficient number, since it is larger than the sum of its proper divisors (5776621).

5238571691 is an equidigital number, since it uses as much as digits as its factorization.

5238571691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776620.

The product of its digits is 453600, while the sum is 47.

The square root of 5238571691 is about 72377.9779421890. The cubic root of 5238571691 is about 1736.7512917667.

The spelling of 5238571691 in words is "five billion, two hundred thirty-eight million, five hundred seventy-one thousand, six hundred ninety-one".