7985918085 has 8 divisors (see below), whose sum is σ = 12777468960. Its totient is φ = 4259156304.

The previous prime is 7985918081. The next prime is 7985918099. The reversal of 7985918085 is 5808195897.

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

It is not a de Polignac number, because 7985918085 - 2² = 7985918081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7985918081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266197255 + ... + 266197284.

It is an arithmetic number, because the mean of its divisors is an integer number (1597183620).

Almost surely, 2^7985918085 is an apocalyptic number.

It is an amenable number.

7985918085 is a deficient number, since it is larger than the sum of its proper divisors (4791550875).

7985918085 is a wasteful number, since it uses less digits than its factorization.

7985918085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532394547.

The product of its (nonzero) digits is 7257600, while the sum is 60.

The square root of 7985918085 is about 89363.9641298437. The cubic root of 7985918085 is about 1998.8258178664.

The spelling of 7985918085 in words is "seven billion, nine hundred eighty-five million, nine hundred eighteen thousand, eighty-five".