638886382246 has 16 divisors (see below), whose sum is σ = 1095254060544. Its totient is φ = 273803383944.

The previous prime is 638886382231. The next prime is 638886382259. The reversal of 638886382246 is 642283688836.

It is a super-3 number, since 3×638886382246³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

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, 419491 + ... + 1205713.

It is an arithmetic number, because the mean of its divisors is an integer number (68453378784).

Almost surely, 2^638886382246 is an apocalyptic number.

638886382246 is a deficient number, since it is larger than the sum of its proper divisors (456367678298).

638886382246 is a wasteful number, since it uses less digits than its factorization.

638886382246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844275.

The product of its digits is 127401984, while the sum is 64.

The spelling of 638886382246 in words is "six hundred thirty-eight billion, eight hundred eighty-six million, three hundred eighty-two thousand, two hundred forty-six".