7188465649 has 4 divisors (see below), whose sum is σ = 7189278580. Its totient is φ = 7187652720.

The previous prime is 7188465637. The next prime is 7188465677. The reversal of 7188465649 is 9465648817.

7188465649 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.

It can be written as a sum of positive squares in 2 ways, for example, as 5185008049 + 2003457600 = 72007^2 + 44760^2 .

It is a cyclic number.

It is not a de Polignac number, because 7188465649 - 2¹³ = 7188457457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7188465593 and 7188465602.

It is not an unprimeable number, because it can be changed into a prime (7188465629) 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, 393054 + ... + 410935.

It is an arithmetic number, because the mean of its divisors is an integer number (1797319645).

Almost surely, 2^7188465649 is an apocalyptic number.

It is an amenable number.

7188465649 is a deficient number, since it is larger than the sum of its proper divisors (812931).

7188465649 is an equidigital number, since it uses as much as digits as its factorization.

7188465649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812930.

The product of its digits is 11612160, while the sum is 58.

The square root of 7188465649 is about 84784.8196848941. The cubic root of 7188465649 is about 1929.9470798129.

The spelling of 7188465649 in words is "seven billion, one hundred eighty-eight million, four hundred sixty-five thousand, six hundred forty-nine".