6787804138 has 8 divisors (see below), whose sum is σ = 10182060900. Its totient is φ = 3393783840.

The previous prime is 6787804129. The next prime is 6787804141. The reversal of 6787804138 is 8314087876.

It can be written as a sum of positive squares in 2 ways, for example, as 6755689249 + 32114889 = 82193^2 + 5667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63588 + ... + 132736.

Almost surely, 2^6787804138 is an apocalyptic number.

6787804138 is a deficient number, since it is larger than the sum of its proper divisors (3394256762).

6787804138 is a wasteful number, since it uses less digits than its factorization.

6787804138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118232.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 6787804138 is about 82388.1310505342. The cubic root of 6787804138 is about 1893.4031737597.

The spelling of 6787804138 in words is "six billion, seven hundred eighty-seven million, eight hundred four thousand, one hundred thirty-eight".