7318813441 has 4 divisors (see below), whose sum is σ = 7318990000. Its totient is φ = 7318636884.

The previous prime is 7318813391. The next prime is 7318813459. The reversal of 7318813441 is 1443188137.

It is a happy number.

7318813441 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1443188137 = 6317 ⋅228461.

It is a cyclic number.

It is not a de Polignac number, because 7318813441 - 2¹⁵ = 7318780673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7318813394 and 7318813403.

It is not an unprimeable number, because it can be changed into a prime (7318813241) 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, 11470 + ... + 121528.

It is an arithmetic number, because the mean of its divisors is an integer number (1829747500).

Almost surely, 2^7318813441 is an apocalyptic number.

It is an amenable number.

7318813441 is a deficient number, since it is larger than the sum of its proper divisors (176559).

7318813441 is a wasteful number, since it uses less digits than its factorization.

7318813441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176558.

The product of its digits is 64512, while the sum is 40.

The square root of 7318813441 is about 85550.0639450375. The cubic root of 7318813441 is about 1941.5424585072.

The spelling of 7318813441 in words is "seven billion, three hundred eighteen million, eight hundred thirteen thousand, four hundred forty-one".