869344971838 has 128 divisors (see below), whose sum is σ = 1580182732800. Its totient is φ = 350881238400.

The previous prime is 869344971811. The next prime is 869344971839. The reversal of 869344971838 is 838179443968.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869344971839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2017041483 + ... + 2017041913.

It is an arithmetic number, because the mean of its divisors is an integer number (12345177600).

Almost surely, 2^869344971838 is an apocalyptic number.

869344971838 is a deficient number, since it is larger than the sum of its proper divisors (710837760962).

869344971838 is a wasteful number, since it uses less digits than its factorization.

869344971838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 250822656, while the sum is 70.

The spelling of 869344971838 in words is "eight hundred sixty-nine billion, three hundred forty-four million, nine hundred seventy-one thousand, eight hundred thirty-eight".