138196384 has 12 divisors (see below), whose sum is σ = 272074194. Its totient is φ = 69098176.

The previous prime is 138196337. The next prime is 138196427. The reversal of 138196384 is 483691831.

It can be written as a sum of positive squares in only one way, i.e., 77792400 + 60403984 = 8820^2 + 7772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138196384.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2159287 + ... + 2159350.

Almost surely, 2^138196384 is an apocalyptic number.

It is an amenable number.

138196384 is a deficient number, since it is larger than the sum of its proper divisors (133877810).

138196384 is an equidigital number, since it uses as much as digits as its factorization.

138196384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318647 (or 4318639 counting only the distinct ones).

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

The square root of 138196384 is about 11755.6958109675. The cubic root of 138196384 is about 517.0099403601.

The spelling of 138196384 in words is "one hundred thirty-eight million, one hundred ninety-six thousand, three hundred eighty-four".