138871365 has 8 divisors (see below), whose sum is σ = 222194208. Its totient is φ = 74064720.

The previous prime is 138871363. The next prime is 138871391. The reversal of 138871365 is 563178831.

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

It is not a de Polignac number, because 138871365 - 2¹ = 138871363 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138871363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629031 + ... + 4629060.

It is an arithmetic number, because the mean of its divisors is an integer number (27774276).

Almost surely, 2^138871365 is an apocalyptic number.

138871365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138871365 is a deficient number, since it is larger than the sum of its proper divisors (83322843).

138871365 is an equidigital number, since it uses as much as digits as its factorization.

138871365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258099.

The product of its digits is 120960, while the sum is 42.

The square root of 138871365 is about 11784.3695206829. The cubic root of 138871365 is about 517.8503030907.

The spelling of 138871365 in words is "one hundred thirty-eight million, eight hundred seventy-one thousand, three hundred sixty-five".