138050878 has 8 divisors (see below), whose sum is σ = 236658672. Its totient is φ = 59164656.

The previous prime is 138050873. The next prime is 138050881. The reversal of 138050878 is 878050831.

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

It is a self number, because there is not a number n which added to its sum of digits gives 138050878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138050873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4930375 + ... + 4930402.

It is an arithmetic number, because the mean of its divisors is an integer number (29582334).

Almost surely, 2^138050878 is an apocalyptic number.

138050878 is a deficient number, since it is larger than the sum of its proper divisors (98607794).

138050878 is an equidigital number, since it uses as much as digits as its factorization.

138050878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9860786.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 138050878 is about 11749.5054364003. The cubic root of 138050878 is about 516.8284245973.

The spelling of 138050878 in words is "one hundred thirty-eight million, fifty thousand, eight hundred seventy-eight".