138930106 has 8 divisors (see below), whose sum is σ = 238165920. Its totient is φ = 59541468.

The previous prime is 138930101. The next prime is 138930107. The reversal of 138930106 is 601039831.

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

It is not an unprimeable number, because it can be changed into a prime (138930101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4961776 + ... + 4961803.

It is an arithmetic number, because the mean of its divisors is an integer number (29770740).

Almost surely, 2^138930106 is an apocalyptic number.

138930106 is a deficient number, since it is larger than the sum of its proper divisors (99235814).

138930106 is an equidigital number, since it uses as much as digits as its factorization.

138930106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923588.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 138930106 is about 11786.8615839841. The cubic root of 138930106 is about 517.9233077179.

Adding to 138930106 its reverse (601039831), we get a palindrome (739969937).

The spelling of 138930106 in words is "one hundred thirty-eight million, nine hundred thirty thousand, one hundred six".