5443157809 has 2 divisors, whose sum is σ = 5443157810. Its totient is φ = 5443157808.

The previous prime is 5443157761. The next prime is 5443157821. The reversal of 5443157809 is 9087513445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4316884209 + 1126273600 = 65703^2 + 33560^2 .

It is a cyclic number.

It is not a de Polignac number, because 5443157809 - 2¹⁷ = 5443026737 is a prime.

It is not a weakly prime, because it can be changed into another prime (5443157609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2721578904 + 2721578905.

It is an arithmetic number, because the mean of its divisors is an integer number (2721578905).

Almost surely, 2^5443157809 is an apocalyptic number.

It is an amenable number.

5443157809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5443157809 is an equidigital number, since it uses as much as digits as its factorization.

5443157809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 5443157809 is about 73777.7595824107. The cubic root of 5443157809 is about 1759.0721056929.

The spelling of 5443157809 in words is "five billion, four hundred forty-three million, one hundred fifty-seven thousand, eight hundred nine".