7798163964 has 12 divisors (see below), whose sum is σ = 18195715944. Its totient is φ = 2599387984.

The previous prime is 7798163963. The next prime is 7798163981. The reversal of 7798163964 is 4693618977.

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

It is a super-2 number, since 2×7798163964² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7798163898 and 7798163907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798163963) 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, 324923487 + ... + 324923510.

It is an arithmetic number, because the mean of its divisors is an integer number (1516309662).

Almost surely, 2^7798163964 is an apocalyptic number.

It is an amenable number.

7798163964 is an abundant number, since it is smaller than the sum of its proper divisors (10397551980).

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

7798163964 is a wasteful number, since it uses less digits than its factorization.

7798163964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649847004 (or 649847002 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 60.

The square root of 7798163964 is about 88307.2135445344. The cubic root of 7798163964 is about 1983.0368630854.

The spelling of 7798163964 in words is "seven billion, seven hundred ninety-eight million, one hundred sixty-three thousand, nine hundred sixty-four".