138383846 has 4 divisors (see below), whose sum is σ = 207575772. Its totient is φ = 69191922.

The previous prime is 138383831. The next prime is 138383863. The reversal of 138383846 is 648383831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 648383831 = 457 ⋅1418783.

It is a junction number, because it is equal to n+sod(n) for n = 138383797 and 138383806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34595960 + ... + 34595963.

It is an arithmetic number, because the mean of its divisors is an integer number (51893943).

Almost surely, 2^138383846 is an apocalyptic number.

138383846 is a deficient number, since it is larger than the sum of its proper divisors (69191926).

138383846 is an equidigital number, since it uses as much as digits as its factorization.

138383846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69191925.

The product of its digits is 331776, while the sum is 44.

The square root of 138383846 is about 11763.6663502498. Note that the first 3 decimals coincide. The cubic root of 138383846 is about 517.2436076580.

The spelling of 138383846 in words is "one hundred thirty-eight million, three hundred eighty-three thousand, eight hundred forty-six".