7348268821 has 4 divisors (see below), whose sum is σ = 7348441644. Its totient is φ = 7348096000.

The previous prime is 7348268813. The next prime is 7348268831. The reversal of 7348268821 is 1288628437.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1288628437 = 149 ⋅8648513.

It can be written as a sum of positive squares in 2 ways, for example, as 1570140625 + 5778128196 = 39625^2 + 76014^2 .

It is a cyclic number.

It is not a de Polignac number, because 7348268821 - 2³ = 7348268813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7348268801) 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, 26871 + ... + 124171.

It is an arithmetic number, because the mean of its divisors is an integer number (1837110411).

Almost surely, 2^7348268821 is an apocalyptic number.

It is an amenable number.

7348268821 is a deficient number, since it is larger than the sum of its proper divisors (172823).

7348268821 is an equidigital number, since it uses as much as digits as its factorization.

7348268821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172822.

The product of its digits is 1032192, while the sum is 49.

The square root of 7348268821 is about 85722.0439618655. The cubic root of 7348268821 is about 1944.1436233658.

The spelling of 7348268821 in words is "seven billion, three hundred forty-eight million, two hundred sixty-eight thousand, eight hundred twenty-one".