786808138 has 8 divisors (see below), whose sum is σ = 1182740832. Its totient is φ = 392561196.

The previous prime is 786808133. The next prime is 786808157. The reversal of 786808138 is 831808687.

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

It is a junction number, because it is equal to n+sod(n) for n = 786808091 and 786808100.

It is not an unprimeable number, because it can be changed into a prime (786808133) 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, 420270 + ... + 422137.

It is an arithmetic number, because the mean of its divisors is an integer number (147842604).

Almost surely, 2^786808138 is an apocalyptic number.

786808138 is a deficient number, since it is larger than the sum of its proper divisors (395932694).

786808138 is a wasteful number, since it uses less digits than its factorization.

786808138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842876.

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 786808138 is about 28050.1004989287. The cubic root of 786808138 is about 923.1868599806.

The spelling of 786808138 in words is "seven hundred eighty-six million, eight hundred eight thousand, one hundred thirty-eight".