7856417245 has 16 divisors (see below), whose sum is σ = 9459099648. Its totient is φ = 6264236160.

The previous prime is 7856417243. The next prime is 7856417273. The reversal of 7856417245 is 5427146587.

It is not a de Polignac number, because 7856417245 - 2¹ = 7856417243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7856417243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3030900 + ... + 3033490.

It is an arithmetic number, because the mean of its divisors is an integer number (591193728).

Almost surely, 2^7856417245 is an apocalyptic number.

It is an amenable number.

7856417245 is a deficient number, since it is larger than the sum of its proper divisors (1602682403).

7856417245 is a wasteful number, since it uses less digits than its factorization.

7856417245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380.

The product of its digits is 1881600, while the sum is 49.

The square root of 7856417245 is about 88636.4329437957. The cubic root of 7856417245 is about 1987.9624646434.

The spelling of 7856417245 in words is "seven billion, eight hundred fifty-six million, four hundred seventeen thousand, two hundred forty-five".