7808549964 has 12 divisors (see below), whose sum is σ = 18219949944. Its totient is φ = 2602849984.

The previous prime is 7808549963. The next prime is 7808549993. The reversal of 7808549964 is 4699458087.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 7808549898 and 7808549907.

It is not an unprimeable number, because it can be changed into a prime (7808549963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325356237 + ... + 325356260.

It is an arithmetic number, because the mean of its divisors is an integer number (1518329162).

Almost surely, 2^7808549964 is an apocalyptic number.

It is an amenable number.

7808549964 is an abundant number, since it is smaller than the sum of its proper divisors (10411399980).

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

7808549964 is a wasteful number, since it uses less digits than its factorization.

7808549964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650712504 (or 650712502 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The square root of 7808549964 is about 88366.0000452663. Note that the first 4 decimals coincide. The cubic root of 7808549964 is about 1983.9168430476.

The spelling of 7808549964 in words is "seven billion, eight hundred eight million, five hundred forty-nine thousand, nine hundred sixty-four".