7148865609 has 12 divisors (see below), whose sum is σ = 10341817200. Its totient is φ = 4758674424.

The previous prime is 7148865593. The next prime is 7148865611. The reversal of 7148865609 is 9065688417.

7148865609 is a `hidden beast` number, since 71 + 4 + 8 + 8 + 6 + 560 + 9 = 666.

It is not a de Polignac number, because 7148865609 - 2⁴ = 7148865593 is a prime.

It is a super-2 number, since 2×7148865609² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7148865509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596739 + ... + 608600.

It is an arithmetic number, because the mean of its divisors is an integer number (861818100).

Almost surely, 2^7148865609 is an apocalyptic number.

It is an amenable number.

7148865609 is a deficient number, since it is larger than the sum of its proper divisors (3192951591).

7148865609 is a wasteful number, since it uses less digits than its factorization.

7148865609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206004 (or 1206001 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 7148865609 is about 84550.9645657576. The cubic root of 7148865609 is about 1926.3966349916.

The spelling of 7148865609 in words is "seven billion, one hundred forty-eight million, eight hundred sixty-five thousand, six hundred nine".