7243198605 has 30 divisors (see below), whose sum is σ = 12987175146. Its totient is φ = 3862125792.

The previous prime is 7243198583. The next prime is 7243198607. The reversal of 7243198605 is 5068913427.

7243198605 is a `hidden beast` number, since 7 + 2 + 4 + 31 + 9 + 8 + 605 = 666.

7243198605 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5422555044 + 1820643561 = 73638^2 + 42669^2 .

It is not a de Polignac number, because 7243198605 - 2¹⁰ = 7243197581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

7243198605 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243198607) 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 29 ways as a sum of consecutive naturals, for example, 1710631 + ... + 1714859.

It is a 1-persistent number, because it is pandigital, but 2⋅7243198605 = 14486397210 is not.

Almost surely, 2^7243198605 is an apocalyptic number.

It is an amenable number.

7243198605 is a deficient number, since it is larger than the sum of its proper divisors (5743976541).

7243198605 is an frugal number, since it uses more digits than its factorization.

7243198605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475 (or 4237 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 7243198605 is about 85106.9832916195. The cubic root of 7243198605 is about 1934.8329042658.

Multiplying 7243198605 by its sum of digits (45), we get a square (325943937225 = 570915²).

7243198605 divided by its sum of digits (45) gives a square (160959969 = 12687²).

The spelling of 7243198605 in words is "seven billion, two hundred forty-three million, one hundred ninety-eight thousand, six hundred five".