138065982 has 8 divisors (see below), whose sum is σ = 276131976. Its totient is φ = 46021992.

The previous prime is 138065969. The next prime is 138066011. The reversal of 138065982 is 289560831.

138065982 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

138065982 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11505493 + ... + 11505504.

It is an arithmetic number, because the mean of its divisors is an integer number (34516497).

Almost surely, 2^138065982 is an apocalyptic number.

138065982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138065982 is a wasteful number, since it uses less digits than its factorization.

138065982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23011002.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 138065982 is about 11750.1481692785. The cubic root of 138065982 is about 516.8472724596.

The spelling of 138065982 in words is "one hundred thirty-eight million, sixty-five thousand, nine hundred eighty-two".