7987814790 has 32 divisors (see below), whose sum is σ = 19173615840. Its totient is φ = 2129766144.

The previous prime is 7987814771. The next prime is 7987814797. The reversal of 7987814790 is 974187897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987814797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240516 + ... + 271704.

It is an arithmetic number, because the mean of its divisors is an integer number (599175495).

Almost surely, 2^7987814790 is an apocalyptic number.

7987814790 is an abundant number, since it is smaller than the sum of its proper divisors (11185801050).

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

7987814790 is a wasteful number, since it uses less digits than its factorization.

7987814790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39736.

The product of its (nonzero) digits is 7112448, while the sum is 60.

The square root of 7987814790 is about 89374.5757472448. The cubic root of 7987814790 is about 1998.9840498434.

The spelling of 7987814790 in words is "seven billion, nine hundred eighty-seven million, eight hundred fourteen thousand, seven hundred ninety".