368668138 has 8 divisors (see below), whose sum is σ = 553096260. Its totient is φ = 184302720.

The previous prime is 368668133. The next prime is 368668169. The reversal of 368668138 is 831866863.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 345848409 + 22819729 = 18597^2 + 4777^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 368668091 and 368668100.

It is not an unprimeable number, because it can be changed into a prime (368668133) 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 3 ways as a sum of consecutive naturals, for example, 3928 + ... + 27436.

Almost surely, 2^368668138 is an apocalyptic number.

368668138 is a deficient number, since it is larger than the sum of its proper divisors (184428122).

368668138 is a wasteful number, since it uses less digits than its factorization.

368668138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31352.

The product of its digits is 995328, while the sum is 49.

The square root of 368668138 is about 19200.7327464344. The cubic root of 368668138 is about 717.0430022962.

It can be divided in two parts, 3686 and 68138, that added together give a square (71824 = 268²).

The spelling of 368668138 in words is "three hundred sixty-eight million, six hundred sixty-eight thousand, one hundred thirty-eight".