138962449258 has 4 divisors (see below), whose sum is σ = 208443673890. Its totient is φ = 69481224628.

The previous prime is 138962449247. The next prime is 138962449273. The reversal of 138962449258 is 852944269831.

138962449258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74820302089 + 64142147169 = 273533^2 + 253263^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138962449196 and 138962449205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34740612313 + ... + 34740612316.

Almost surely, 2^138962449258 is an apocalyptic number.

138962449258 is a deficient number, since it is larger than the sum of its proper divisors (69481224632).

138962449258 is an equidigital number, since it uses as much as digits as its factorization.

138962449258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69481224631.

The product of its digits is 29859840, while the sum is 61.

The spelling of 138962449258 in words is "one hundred thirty-eight billion, nine hundred sixty-two million, four hundred forty-nine thousand, two hundred fifty-eight".