8255786838 has 32 divisors (see below), whose sum is σ = 18262287456. Its totient is φ = 2471586048.

The previous prime is 8255786821. The next prime is 8255786873. The reversal of 8255786838 is 8386875528.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1427431 + ... + 1433202.

It is an arithmetic number, because the mean of its divisors is an integer number (570696483).

Almost surely, 2^8255786838 is an apocalyptic number.

8255786838 is an abundant number, since it is smaller than the sum of its proper divisors (10006500618).

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

8255786838 is a wasteful number, since it uses less digits than its factorization.

8255786838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860688.

The product of its digits is 25804800, while the sum is 60.

The square root of 8255786838 is about 90861.3605335073. The cubic root of 8255786838 is about 2021.0923443622.

The spelling of 8255786838 in words is "eight billion, two hundred fifty-five million, seven hundred eighty-six thousand, eight hundred thirty-eight".