7281149605 has 8 divisors (see below), whose sum is σ = 8738905464. Its totient is φ = 5823902400.

The previous prime is 7281149597. The next prime is 7281149611. The reversal of 7281149605 is 5069411827.

It can be written as a sum of positive squares in 4 ways, for example, as 100620961 + 7180528644 = 10031^2 + 84738^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7281149605 - 2³ = 7281149597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 94926 + ... + 153535.

It is an arithmetic number, because the mean of its divisors is an integer number (1092363183).

Almost surely, 2^7281149605 is an apocalyptic number.

It is an amenable number.

7281149605 is a deficient number, since it is larger than the sum of its proper divisors (1457755859).

7281149605 is a wasteful number, since it uses less digits than its factorization.

7281149605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254327.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 7281149605 is about 85329.6525540799. The cubic root of 7281149605 is about 1938.2062284554.

The spelling of 7281149605 in words is "seven billion, two hundred eighty-one million, one hundred forty-nine thousand, six hundred five".