7987523814 has 96 divisors (see below), whose sum is σ = 19279705536. Its totient is φ = 2378557440.

The previous prime is 7987523801. The next prime is 7987523821. The reversal of 7987523814 is 4183257897.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 455599 + ... + 472805.

It is an arithmetic number, because the mean of its divisors is an integer number (200830266).

Almost surely, 2^7987523814 is an apocalyptic number.

7987523814 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7987523814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9639852768).

7987523814 is an abundant number, since it is smaller than the sum of its proper divisors (11292181722).

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

7987523814 is a wasteful number, since it uses less digits than its factorization.

7987523814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17310 (or 17307 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 7987523814 is about 89372.9478869305. The cubic root of 7987523814 is about 1998.9597768951.

The spelling of 7987523814 in words is "seven billion, nine hundred eighty-seven million, five hundred twenty-three thousand, eight hundred fourteen".