138630102 has 64 divisors (see below), whose sum is σ = 310915584. Its totient is φ = 40930560.

The previous prime is 138630077. The next prime is 138630103. The reversal of 138630102 is 201036831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138630103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213943 + ... + 214589.

It is an arithmetic number, because the mean of its divisors is an integer number (4858056).

Almost surely, 2^138630102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138630102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155457792).

138630102 is an abundant number, since it is smaller than the sum of its proper divisors (172285482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138630102 is a wasteful number, since it uses less digits than its factorization.

138630102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 138630102 is about 11774.1285027810. The cubic root of 138630102 is about 517.5502399356.

Adding to 138630102 its reverse (201036831), we get a palindrome (339666933).

The spelling of 138630102 in words is "one hundred thirty-eight million, six hundred thirty thousand, one hundred two".