138603982 has 8 divisors (see below), whose sum is σ = 226806552. Its totient is φ = 63001800.

The previous prime is 138603977. The next prime is 138603991. The reversal of 138603982 is 289306831.

138603982 is digitally balanced in base 2, because in such base 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.

It is a super-2 number, since 2×138603982² = 38422127652512648, which contains 22 as substring.

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, 3150069 + ... + 3150112.

It is an arithmetic number, because the mean of its divisors is an integer number (28350819).

Almost surely, 2^138603982 is an apocalyptic number.

138603982 is a deficient number, since it is larger than the sum of its proper divisors (88202570).

138603982 is a wasteful number, since it uses less digits than its factorization.

138603982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300194.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 138603982 is about 11773.0192389208. The cubic root of 138603982 is about 517.5177331395.

The spelling of 138603982 in words is "one hundred thirty-eight million, six hundred three thousand, nine hundred eighty-two".