138674245 has 16 divisors (see below), whose sum is σ = 174298752. Its totient is φ = 105716160.

The previous prime is 138674243. The next prime is 138674251. The reversal of 138674245 is 542476831.

It is not a de Polignac number, because 138674245 - 2¹ = 138674243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138674198 and 138674207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138674243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30415 + ... + 34675.

It is an arithmetic number, because the mean of its divisors is an integer number (10893672).

Almost surely, 2^138674245 is an apocalyptic number.

It is an amenable number.

138674245 is a deficient number, since it is larger than the sum of its proper divisors (35624507).

138674245 is a wasteful number, since it uses less digits than its factorization.

138674245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572.

The product of its digits is 161280, while the sum is 40.

The square root of 138674245 is about 11776.0029296871. The cubic root of 138674245 is about 517.6051673899.

The spelling of 138674245 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, two hundred forty-five".