5318280397 has 4 divisors (see below), whose sum is σ = 5320766556. Its totient is φ = 5315794240.

The previous prime is 5318280349. The next prime is 5318280403. The reversal of 5318280397 is 7930828135.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4567191561 + 751088836 = 67581^2 + 27406^2 .

It is a cyclic number.

It is not a de Polignac number, because 5318280397 - 2³¹ = 3170796749 is a prime.

It is a super-2 number, since 2×5318280397² = 56568212762228955218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5318280307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239868 + ... + 1244149.

It is an arithmetic number, because the mean of its divisors is an integer number (1330191639).

Almost surely, 2^5318280397 is an apocalyptic number.

It is an amenable number.

5318280397 is a deficient number, since it is larger than the sum of its proper divisors (2486159).

5318280397 is a wasteful number, since it uses less digits than its factorization.

5318280397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486158.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 5318280397 is about 72926.5411013028. The cubic root of 5318280397 is about 1745.5156367052.

The spelling of 5318280397 in words is "five billion, three hundred eighteen million, two hundred eighty thousand, three hundred ninety-seven".