838278863 has 4 divisors (see below), whose sum is σ = 838344528. Its totient is φ = 838213200.

The previous prime is 838278829. The next prime is 838278869. The reversal of 838278863 is 368872838.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 838278863 - 2¹⁴ = 838262479 is a prime.

It is a super-2 number, since 2×838278863² = 1405422904305145538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838278869) 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, 6806 + ... + 41507.

It is an arithmetic number, because the mean of its divisors is an integer number (209586132).

Almost surely, 2^838278863 is an apocalyptic number.

838278863 is a deficient number, since it is larger than the sum of its proper divisors (65665).

838278863 is a wasteful number, since it uses less digits than its factorization.

838278863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65664.

The product of its digits is 3096576, while the sum is 53.

The square root of 838278863 is about 28953.0458328653. The cubic root of 838278863 is about 942.8939270368.

The spelling of 838278863 in words is "eight hundred thirty-eight million, two hundred seventy-eight thousand, eight hundred sixty-three".