138622413 has 4 divisors (see below), whose sum is σ = 184829888. Its totient is φ = 92414940.

The previous prime is 138622373. The next prime is 138622417. The reversal of 138622413 is 314226831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 138622413 - 2¹³ = 138614221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138622417) 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 3 ways as a sum of consecutive naturals, for example, 23103733 + ... + 23103738.

It is an arithmetic number, because the mean of its divisors is an integer number (46207472).

Almost surely, 2^138622413 is an apocalyptic number.

It is an amenable number.

138622413 is a deficient number, since it is larger than the sum of its proper divisors (46207475).

138622413 is an equidigital number, since it uses as much as digits as its factorization.

138622413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46207474.

The product of its digits is 6912, while the sum is 30.

The square root of 138622413 is about 11773.8019772714. The cubic root of 138622413 is about 517.5406712650.

The spelling of 138622413 in words is "one hundred thirty-eight million, six hundred twenty-two thousand, four hundred thirteen".