6181788968 has 8 divisors (see below), whose sum is σ = 11590854330. Its totient is φ = 3090894480.

The previous prime is 6181788937. The next prime is 6181788971. The reversal of 6181788968 is 8698871816.

It can be written as a sum of positive squares in only one way, i.e., 5769617764 + 412171204 = 75958^2 + 20302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 6181788968.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386361803 + ... + 386361818.

Almost surely, 2^6181788968 is an apocalyptic number.

It is an amenable number.

6181788968 is a deficient number, since it is larger than the sum of its proper divisors (5409065362).

6181788968 is a wasteful number, since it uses less digits than its factorization.

6181788968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772723627 (or 772723623 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 62.

The square root of 6181788968 is about 78624.3535299337. The cubic root of 6181788968 is about 1835.2901132380.

The spelling of 6181788968 in words is "six billion, one hundred eighty-one million, seven hundred eighty-eight thousand, nine hundred sixty-eight".