5657237191 has 2 divisors, whose sum is σ = 5657237192. Its totient is φ = 5657237190.

The previous prime is 5657237077. The next prime is 5657237219. The reversal of 5657237191 is 1917327565.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5657237191 - 2¹⁹ = 5656712903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5657237591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828618595 + 2828618596.

It is an arithmetic number, because the mean of its divisors is an integer number (2828618596).

Almost surely, 2^5657237191 is an apocalyptic number.

5657237191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5657237191 is an equidigital number, since it uses as much as digits as its factorization.

5657237191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 46.

The square root of 5657237191 is about 75214.6075639566. The cubic root of 5657237191 is about 1781.8376417123.

The spelling of 5657237191 in words is "five billion, six hundred fifty-seven million, two hundred thirty-seven thousand, one hundred ninety-one".