138846783 has 4 divisors (see below), whose sum is σ = 185129048. Its totient is φ = 92564520.

The previous prime is 138846779. The next prime is 138846793. The reversal of 138846783 is 387648831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 138846783 - 2² = 138846779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138846793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23141128 + ... + 23141133.

It is an arithmetic number, because the mean of its divisors is an integer number (46282262).

Almost surely, 2^138846783 is an apocalyptic number.

138846783 is a deficient number, since it is larger than the sum of its proper divisors (46282265).

138846783 is an equidigital number, since it uses as much as digits as its factorization.

138846783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46282264.

The product of its digits is 774144, while the sum is 48.

The square root of 138846783 is about 11783.3264827891. The cubic root of 138846783 is about 517.8197459216.

The spelling of 138846783 in words is "one hundred thirty-eight million, eight hundred forty-six thousand, seven hundred eighty-three".