7985798814 has 48 divisors (see below), whose sum is σ = 18619823376. Its totient is φ = 2276668800.

The previous prime is 7985798801. The next prime is 7985798827. The reversal of 7985798814 is 4188975897.

It is an interprime number because it is at equal distance from previous prime (7985798801) and next prime (7985798827).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106074 + ... + 164994.

It is an arithmetic number, because the mean of its divisors is an integer number (387912987).

Almost surely, 2^7985798814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7985798814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9309911688).

7985798814 is an abundant number, since it is smaller than the sum of its proper divisors (10634024562).

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

7985798814 is a wasteful number, since it uses less digits than its factorization.

7985798814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59401 (or 59394 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 66.

The square root of 7985798814 is about 89363.2967946013. The cubic root of 7985798814 is about 1998.8158668861.

The spelling of 7985798814 in words is "seven billion, nine hundred eighty-five million, seven hundred ninety-eight thousand, eight hundred fourteen".