7743020649 has 16 divisors (see below), whose sum is σ = 12706495872. Its totient is φ = 4084230528.

The previous prime is 7743020647. The next prime is 7743020693. The reversal of 7743020649 is 9460203477.

It is not a de Polignac number, because 7743020649 - 2¹ = 7743020647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7743020649.

It is not an unprimeable number, because it can be changed into a prime (7743020641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14181084 + ... + 14181629.

It is an arithmetic number, because the mean of its divisors is an integer number (794155992).

Almost surely, 2^7743020649 is an apocalyptic number.

It is an amenable number.

7743020649 is a deficient number, since it is larger than the sum of its proper divisors (4963475223).

7743020649 is a wasteful number, since it uses less digits than its factorization.

7743020649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28362736.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 7743020649 is about 87994.4353297412. The cubic root of 7743020649 is about 1978.3515723426.

The spelling of 7743020649 in words is "seven billion, seven hundred forty-three million, twenty thousand, six hundred forty-nine".