838376808385 has 8 divisors (see below), whose sum is σ = 1006152146280. Its totient is φ = 670634795904.

The previous prime is 838376808359. The next prime is 838376808403. The reversal of 838376808385 is 583808673838.

It can be written as a sum of positive squares in 4 ways, for example, as 45286819249 + 793089989136 = 212807^2 + 890556^2 .

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 838376808385 - 2²⁷ = 838242590657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 838376808385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8275972 + ... + 8376661.

It is an arithmetic number, because the mean of its divisors is an integer number (125769018285).

Almost surely, 2^838376808385 is an apocalyptic number.

It is an amenable number.

838376808385 is a deficient number, since it is larger than the sum of its proper divisors (167775337895).

838376808385 is a wasteful number, since it uses less digits than its factorization.

838376808385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16662707.

The product of its (nonzero) digits is 185794560, while the sum is 67.

The spelling of 838376808385 in words is "eight hundred thirty-eight billion, three hundred seventy-six million, eight hundred eight thousand, three hundred eighty-five".