838564878473 has 16 divisors (see below), whose sum is σ = 968293453824. Its totient is φ = 711333271440.

The previous prime is 838564878469. The next prime is 838564878491. The reversal of 838564878473 is 374878465838.

It is a cyclic number.

It is not a de Polignac number, because 838564878473 - 2² = 838564878469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 838564878397 and 838564878406.

It is not an unprimeable number, because it can be changed into a prime (838564878973) 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 15 ways as a sum of consecutive naturals, for example, 177386 + ... + 1307132.

It is an arithmetic number, because the mean of its divisors is an integer number (60518340864).

Almost surely, 2^838564878473 is an apocalyptic number.

It is an amenable number.

838564878473 is a deficient number, since it is larger than the sum of its proper divisors (129728575351).

838564878473 is a wasteful number, since it uses less digits than its factorization.

838564878473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130852.

The product of its digits is 867041280, while the sum is 71.

The spelling of 838564878473 in words is "eight hundred thirty-eight billion, five hundred sixty-four million, eight hundred seventy-eight thousand, four hundred seventy-three".