8166379638 has 8 divisors (see below), whose sum is σ = 16332759288. Its totient is φ = 2722126544.

The previous prime is 8166379597. The next prime is 8166379643. The reversal of 8166379638 is 8369736618.

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

8166379638 is an admirable number.

It is a super-2 number, since 2×8166379638² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680531631 + ... + 680531642.

It is an arithmetic number, because the mean of its divisors is an integer number (2041594911).

Almost surely, 2^8166379638 is an apocalyptic number.

8166379638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8166379638 is a wasteful number, since it uses less digits than its factorization.

8166379638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361063278.

The product of its digits is 7838208, while the sum is 57.

The square root of 8166379638 is about 90368.0233157725. The cubic root of 8166379638 is about 2013.7699465412.

The spelling of 8166379638 in words is "eight billion, one hundred sixty-six million, three hundred seventy-nine thousand, six hundred thirty-eight".