138434695 has 8 divisors (see below), whose sum is σ = 189853344. Its totient is φ = 94926624.

The previous prime is 138434671. The next prime is 138434707. The reversal of 138434695 is 596434831.

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

It is a cyclic number.

It is not a de Polignac number, because 138434695 - 2¹⁵ = 138401927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1977604 + ... + 1977673.

It is an arithmetic number, because the mean of its divisors is an integer number (23731668).

Almost surely, 2^138434695 is an apocalyptic number.

138434695 is a deficient number, since it is larger than the sum of its proper divisors (51418649).

138434695 is an equidigital number, since it uses as much as digits as its factorization.

138434695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955289.

The product of its digits is 311040, while the sum is 43.

The square root of 138434695 is about 11765.8274252175. The cubic root of 138434695 is about 517.3069534414.

It can be divided in two parts, 138434 and 695, that added together give a square (139129 = 373²).

The spelling of 138434695 in words is "one hundred thirty-eight million, four hundred thirty-four thousand, six hundred ninety-five".