138968482 has 12 divisors (see below), whose sum is σ = 212056326. Its totient is φ = 68303120.

The previous prime is 138968449. The next prime is 138968503. The reversal of 138968482 is 284869831.

138968482 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 88003161 + 50965321 = 9381^2 + 7139^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3019 + ... + 16942.

Almost surely, 2^138968482 is an apocalyptic number.

138968482 is a deficient number, since it is larger than the sum of its proper divisors (73087844).

138968482 is an equidigital number, since it uses as much as digits as its factorization.

138968482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20081 (or 20022 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 138968482 is about 11788.4893858374. The cubic root of 138968482 is about 517.9709911554.

The spelling of 138968482 in words is "one hundred thirty-eight million, nine hundred sixty-eight thousand, four hundred eighty-two".