138914485 has 4 divisors (see below), whose sum is σ = 166697388. Its totient is φ = 111131584.

The previous prime is 138914473. The next prime is 138914551. The reversal of 138914485 is 584419831.

138914485 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, and also an emirpimes, since its reverse is a distinct semiprime: 584419831 = 3559 ⋅164209.

It can be written as a sum of positive squares in 2 ways, for example, as 64368529 + 74545956 = 8023^2 + 8634^2 .

It is a cyclic number.

It is not a de Polignac number, because 138914485 - 2⁷ = 138914357 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 3 ways as a sum of consecutive naturals, for example, 13891444 + ... + 13891453.

It is an arithmetic number, because the mean of its divisors is an integer number (41674347).

Almost surely, 2^138914485 is an apocalyptic number.

It is an amenable number.

138914485 is a deficient number, since it is larger than the sum of its proper divisors (27782903).

138914485 is an equidigital number, since it uses as much as digits as its factorization.

138914485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27782902.

The product of its digits is 138240, while the sum is 43.

The square root of 138914485 is about 11786.1989207717. The cubic root of 138914485 is about 517.9038955989.

The spelling of 138914485 in words is "one hundred thirty-eight million, nine hundred fourteen thousand, four hundred eighty-five".