6928457945 has 4 divisors (see below), whose sum is σ = 8314149540. Its totient is φ = 5542766352.

The previous prime is 6928457941. The next prime is 6928457971. The reversal of 6928457945 is 5497548296.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1602961369 + 5325496576 = 40037^2 + 72976^2 .

It is a cyclic number.

It is not a de Polignac number, because 6928457945 - 2² = 6928457941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6928457941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692845790 + ... + 692845799.

It is an arithmetic number, because the mean of its divisors is an integer number (2078537385).

Almost surely, 2^6928457945 is an apocalyptic number.

It is an amenable number.

6928457945 is a deficient number, since it is larger than the sum of its proper divisors (1385691595).

6928457945 is a wasteful number, since it uses less digits than its factorization.

6928457945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385691594.

The product of its digits is 21772800, while the sum is 59.

The square root of 6928457945 is about 83237.3590703117. The cubic root of 6928457945 is about 1906.3919481934.

The spelling of 6928457945 in words is "six billion, nine hundred twenty-eight million, four hundred fifty-seven thousand, nine hundred forty-five".