7879819564 has 36 divisors (see below), whose sum is σ = 14334395040. Its totient is φ = 3785664960.

The previous prime is 7879819559. The next prime is 7879819601. The reversal of 7879819564 is 4659189787.

It is a super-2 number, since 2×7879819564² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7879819496 and 7879819505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18282429 + ... + 18282859.

It is an arithmetic number, because the mean of its divisors is an integer number (398177640).

Almost surely, 2^7879819564 is an apocalyptic number.

It is an amenable number.

7879819564 is a deficient number, since it is larger than the sum of its proper divisors (6454575476).

7879819564 is a wasteful number, since it uses less digits than its factorization.

7879819564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258 (or 859 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 64.

The square root of 7879819564 is about 88768.3477597730. The cubic root of 7879819564 is about 1989.9343904027.

The spelling of 7879819564 in words is "seven billion, eight hundred seventy-nine million, eight hundred nineteen thousand, five hundred sixty-four".