7798951540 has 24 divisors (see below), whose sum is σ = 16395242472. Its totient is φ = 3116257920.

The previous prime is 7798951529. The next prime is 7798951543. The reversal of 7798951540 is 451598977.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 360924004 + 7438027536 = 18998^2 + 86244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798951543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188379 + ... + 226018.

It is an arithmetic number, because the mean of its divisors is an integer number (683135103).

Almost surely, 2^7798951540 is an apocalyptic number.

It is an amenable number.

7798951540 is an abundant number, since it is smaller than the sum of its proper divisors (8596290932).

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

7798951540 is a wasteful number, since it uses less digits than its factorization.

7798951540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415347 (or 415345 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 55.

The square root of 7798951540 is about 88311.6727279016. The cubic root of 7798951540 is about 1983.1036198106.

The spelling of 7798951540 in words is "seven billion, seven hundred ninety-eight million, nine hundred fifty-one thousand, five hundred forty".