5397371809 has 2 divisors, whose sum is σ = 5397371810. Its totient is φ = 5397371808.

The previous prime is 5397371783. The next prime is 5397371827. The reversal of 5397371809 is 9081737935.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4135133025 + 1262238784 = 64305^2 + 35528^2 .

It is a cyclic number.

It is not a de Polignac number, because 5397371809 - 2⁹ = 5397371297 is a prime.

It is not a weakly prime, because it can be changed into another prime (5397371209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2698685904 + 2698685905.

It is an arithmetic number, because the mean of its divisors is an integer number (2698685905).

Almost surely, 2^5397371809 is an apocalyptic number.

It is an amenable number.

5397371809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5397371809 is an equidigital number, since it uses as much as digits as its factorization.

5397371809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The square root of 5397371809 is about 73466.8075323816. The cubic root of 5397371809 is about 1754.1259716615.

The spelling of 5397371809 in words is "five billion, three hundred ninety-seven million, three hundred seventy-one thousand, eight hundred nine".