838376162381 has 4 divisors (see below), whose sum is σ = 839483661372. Its totient is φ = 837268663392.

The previous prime is 838376162369. The next prime is 838376162411. The reversal of 838376162381 is 183261673838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 337289146756 + 501087015625 = 580766^2 + 707875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838376162381 is a prime.

It is a super-2 number, since 2×838376162381² (a number of 25 digits) 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 (838376152381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553748360 + ... + 553749873.

It is an arithmetic number, because the mean of its divisors is an integer number (209870915343).

Almost surely, 2^838376162381 is an apocalyptic number.

It is an amenable number.

838376162381 is a deficient number, since it is larger than the sum of its proper divisors (1107498991).

838376162381 is a wasteful number, since it uses less digits than its factorization.

838376162381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107498990.

The product of its digits is 6967296, while the sum is 56.

The spelling of 838376162381 in words is "eight hundred thirty-eight billion, three hundred seventy-six million, one hundred sixty-two thousand, three hundred eighty-one".