7281610749 has 120 divisors (see below), whose sum is σ = 13409975040. Its totient is φ = 3915184896.

The previous prime is 7281610741. The next prime is 7281610751. The reversal of 7281610749 is 9470161827.

It is a happy number.

7281610749 is a `hidden beast` number, since 7 + 28 + 1 + 610 + 7 + 4 + 9 = 666.

It is not a de Polignac number, because 7281610749 - 2³ = 7281610741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7281610741) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 16816437 + ... + 16816869.

It is an arithmetic number, because the mean of its divisors is an integer number (111749792).

Almost surely, 2^7281610749 is an apocalyptic number.

It is an amenable number.

7281610749 is a deficient number, since it is larger than the sum of its proper divisors (6128364291).

7281610749 is a wasteful number, since it uses less digits than its factorization.

7281610749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 7281610749 is about 85332.3546434762. The cubic root of 7281610749 is about 1938.2471456802.

The spelling of 7281610749 in words is "seven billion, two hundred eighty-one million, six hundred ten thousand, seven hundred forty-nine".