138679082 has 4 divisors (see below), whose sum is σ = 208018626. Its totient is φ = 69339540.

The previous prime is 138679069. The next prime is 138679103. The reversal of 138679082 is 280976831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 280976831 = 3209 ⋅87559.

It can be written as a sum of positive squares in only one way, i.e., 131767441 + 6911641 = 11479^2 + 2629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34669769 + ... + 34669772.

Almost surely, 2^138679082 is an apocalyptic number.

138679082 is a deficient number, since it is larger than the sum of its proper divisors (69339544).

138679082 is an equidigital number, since it uses as much as digits as its factorization.

138679082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69339543.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 138679082 is about 11776.2083031849. The cubic root of 138679082 is about 517.6111853953.

The spelling of 138679082 in words is "one hundred thirty-eight million, six hundred seventy-nine thousand, eighty-two".