138146846 has 4 divisors (see below), whose sum is σ = 207220272. Its totient is φ = 69073422.

The previous prime is 138146843. The next prime is 138146851. The reversal of 138146846 is 648641831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 648641831 = 227 ⋅2857453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138146843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34536710 + ... + 34536713.

It is an arithmetic number, because the mean of its divisors is an integer number (51805068).

Almost surely, 2^138146846 is an apocalyptic number.

138146846 is a deficient number, since it is larger than the sum of its proper divisors (69073426).

138146846 is an equidigital number, since it uses as much as digits as its factorization.

138146846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69073425.

The product of its digits is 110592, while the sum is 41.

The square root of 138146846 is about 11753.5886434740. The cubic root of 138146846 is about 516.9481570279.

The spelling of 138146846 in words is "one hundred thirty-eight million, one hundred forty-six thousand, eight hundred forty-six".