7985663394 has 8 divisors (see below), whose sum is σ = 15971326800. Its totient is φ = 2661887796.

The previous prime is 7985663383. The next prime is 7985663407. The reversal of 7985663394 is 4933665897.

It is a sphenic number, since it is the product of 3 distinct primes.

7985663394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665471944 + ... + 665471955.

It is an arithmetic number, because the mean of its divisors is an integer number (1996415850).

Almost surely, 2^7985663394 is an apocalyptic number.

7985663394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7985663394 is a wasteful number, since it uses less digits than its factorization.

7985663394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330943904.

The product of its digits is 29393280, while the sum is 60.

The square root of 7985663394 is about 89362.5390977674. The cubic root of 7985663394 is about 1998.8045684474.

The spelling of 7985663394 in words is "seven billion, nine hundred eighty-five million, six hundred sixty-three thousand, three hundred ninety-four".