138530002 has 8 divisors (see below), whose sum is σ = 223779276. Its totient is φ = 63936912.

The previous prime is 138529999. The next prime is 138530023. The reversal of 138530002 is 200035831.

It can be written as a sum of positive squares in 2 ways, for example, as 132917841 + 5612161 = 11529^2 + 2369^2 .

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

It is a super-2 number, since 2×138530002² = 38381122908240008, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2664013 + ... + 2664064.

Almost surely, 2^138530002 is an apocalyptic number.

138530002 is a deficient number, since it is larger than the sum of its proper divisors (85249274).

138530002 is a wasteful number, since it uses less digits than its factorization.

138530002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328092.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 138530002 is about 11769.8768897555. The cubic root of 138530002 is about 517.4256415678.

Adding to 138530002 its reverse (200035831), we get a palindrome (338565833).

The spelling of 138530002 in words is "one hundred thirty-eight million, five hundred thirty thousand, two".