138260498 has 12 divisors (see below), whose sum is σ = 216801438. Its totient is φ = 66124080.

The previous prime is 138260497. The next prime is 138260509. The reversal of 138260498 is 894062831.

It can be written as a sum of positive squares in only one way, i.e., 112423609 + 25836889 = 10603^2 + 5083^2 .

It is not an unprimeable number, because it can be changed into a prime (138260491) 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 5 ways as a sum of consecutive naturals, for example, 64283 + ... + 66398.

Almost surely, 2^138260498 is an apocalyptic number.

138260498 is a deficient number, since it is larger than the sum of its proper divisors (78540940).

138260498 is a wasteful number, since it uses less digits than its factorization.

138260498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130729 (or 130706 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 138260498 is about 11758.4224282001. The cubic root of 138260498 is about 517.0898808274.

The spelling of 138260498 in words is "one hundred thirty-eight million, two hundred sixty thousand, four hundred ninety-eight".