138461983 has 8 divisors (see below), whose sum is σ = 151171200. Its totient is φ = 125773080.

The previous prime is 138461963. The next prime is 138461989. The reversal of 138461983 is 389164831.

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

It is a cyclic number.

It is not a de Polignac number, because 138461983 - 2¹⁷ = 138330911 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 (138461989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11568 + ... + 20266.

It is an arithmetic number, because the mean of its divisors is an integer number (18896400).

Almost surely, 2^138461983 is an apocalyptic number.

138461983 is a deficient number, since it is larger than the sum of its proper divisors (12709217).

138461983 is a wasteful number, since it uses less digits than its factorization.

138461983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157.

The product of its digits is 124416, while the sum is 43.

The square root of 138461983 is about 11766.9869975283. The cubic root of 138461983 is about 517.3409414161.

The spelling of 138461983 in words is "one hundred thirty-eight million, four hundred sixty-one thousand, nine hundred eighty-three".