138298671 has 40 divisors (see below), whose sum is σ = 237837600. Its totient is φ = 78449472.

The previous prime is 138298627. The next prime is 138298673. The reversal of 138298671 is 176892831.

138298671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138298671 - 2⁶ = 138298607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138298673) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 83665 + ... + 85301.

It is an arithmetic number, because the mean of its divisors is an integer number (5945940).

Almost surely, 2^138298671 is an apocalyptic number.

138298671 is a deficient number, since it is larger than the sum of its proper divisors (99538929).

138298671 is a wasteful number, since it uses less digits than its factorization.

138298671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805 (or 1796 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 138298671 is about 11760.0455356261. The cubic root of 138298671 is about 517.1374650518.

It can be divided in two parts, 13829 and 8671, that added together give a square (22500 = 150²).

The spelling of 138298671 in words is "one hundred thirty-eight million, two hundred ninety-eight thousand, six hundred seventy-one".