385000138 has 4 divisors (see below), whose sum is σ = 577500210. Its totient is φ = 192500068.

The previous prime is 385000123. The next prime is 385000163. The reversal of 385000138 is 831000583.

385000138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 382710969 + 2289169 = 19563^2 + 1513^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96250033 + ... + 96250036.

Almost surely, 2^385000138 is an apocalyptic number.

385000138 is a deficient number, since it is larger than the sum of its proper divisors (192500072).

385000138 is a wasteful number, since it uses less digits than its factorization.

385000138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192500071.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 385000138 is about 19621.4203869139. The cubic root of 385000138 is about 727.4787217987.

The spelling of 385000138 in words is "three hundred eighty-five million, one hundred thirty-eight", and thus it is an aban number.