138146522 has 8 divisors (see below), whose sum is σ = 219409236. Its totient is φ = 65010112.

The previous prime is 138146521. The next prime is 138146531. The reversal of 138146522 is 225641831.

It can be written as a sum of positive squares in 2 ways, for example, as 125193721 + 12952801 = 11189^2 + 3599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (138146521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2031533 + ... + 2031600.

Almost surely, 2^138146522 is an apocalyptic number.

138146522 is a deficient number, since it is larger than the sum of its proper divisors (81262714).

138146522 is a wasteful number, since it uses less digits than its factorization.

138146522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063152.

The product of its digits is 11520, while the sum is 32.

The square root of 138146522 is about 11753.5748604414. The cubic root of 138146522 is about 516.9477528895.

The spelling of 138146522 in words is "one hundred thirty-eight million, one hundred forty-six thousand, five hundred twenty-two".