7289517945 has 32 divisors (see below), whose sum is σ = 11821313664. Its totient is φ = 3835328000.

The previous prime is 7289517919. The next prime is 7289518051. The reversal of 7289517945 is 5497159827.

It is not a de Polignac number, because 7289517945 - 2⁶ = 7289517881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417154 + ... + 434276.

It is an arithmetic number, because the mean of its divisors is an integer number (369416052).

Almost surely, 2^7289517945 is an apocalyptic number.

It is an amenable number.

7289517945 is a deficient number, since it is larger than the sum of its proper divisors (4531795719).

7289517945 is a wasteful number, since it uses less digits than its factorization.

7289517945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17513.

The product of its digits is 6350400, while the sum is 57.

The square root of 7289517945 is about 85378.6738301785. The cubic root of 7289517945 is about 1938.9484811560.

The spelling of 7289517945 in words is "seven billion, two hundred eighty-nine million, five hundred seventeen thousand, nine hundred forty-five".