838198871 has 8 divisors (see below), whose sum is σ = 860632080. Its totient is φ = 815899392.

The previous prime is 838198849. The next prime is 838198883. The reversal of 838198871 is 178891838.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 838198871 - 2¹⁴ = 838182487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838198811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20666 + ... + 45863.

It is an arithmetic number, because the mean of its divisors is an integer number (107579010).

Almost surely, 2^838198871 is an apocalyptic number.

838198871 is a deficient number, since it is larger than the sum of its proper divisors (22433209).

838198871 is a wasteful number, since it uses less digits than its factorization.

838198871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66865.

The product of its digits is 774144, while the sum is 53.

The square root of 838198871 is about 28951.6643908429. The cubic root of 838198871 is about 942.8639344836.

The spelling of 838198871 in words is "eight hundred thirty-eight million, one hundred ninety-eight thousand, eight hundred seventy-one".