138311853 has 8 divisors (see below), whose sum is σ = 185073216. Its totient is φ = 91879200.

The previous prime is 138311851. The next prime is 138311861. The reversal of 138311853 is 358113831.

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

It is not a de Polignac number, because 138311853 - 2¹ = 138311851 is a prime.

It is a Smith number, since the sum of its digits (33) 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 (138311851) 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, 81193 + ... + 82878.

It is an arithmetic number, because the mean of its divisors is an integer number (23134152).

Almost surely, 2^138311853 is an apocalyptic number.

It is an amenable number.

138311853 is a deficient number, since it is larger than the sum of its proper divisors (46761363).

138311853 is a wasteful number, since it uses less digits than its factorization.

138311853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164355.

The product of its digits is 8640, while the sum is 33.

The square root of 138311853 is about 11760.6059792853. The cubic root of 138311853 is about 517.1538949265.

The spelling of 138311853 in words is "one hundred thirty-eight million, three hundred eleven thousand, eight hundred fifty-three".