6291382868 has 6 divisors (see below), whose sum is σ = 11009920026. Its totient is φ = 3145691432.

The previous prime is 6291382793. The next prime is 6291382891. The reversal of 6291382868 is 8682831926.

It can be written as a sum of positive squares in only one way, i.e., 5142037264 + 1149345604 = 71708^2 + 33902^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786422855 + ... + 786422862.

It is an arithmetic number, because the mean of its divisors is an integer number (1834986671).

Almost surely, 2^6291382868 is an apocalyptic number.

It is an amenable number.

6291382868 is a deficient number, since it is larger than the sum of its proper divisors (4718537158).

6291382868 is a wasteful number, since it uses less digits than its factorization.

6291382868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572845721 (or 1572845719 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 6291382868 is about 79318.2379279822. The cubic root of 6291382868 is about 1846.0722970120.

The spelling of 6291382868 in words is "six billion, two hundred ninety-one million, three hundred eighty-two thousand, eight hundred sixty-eight".