20838952938 has 16 divisors (see below), whose sum is σ = 41751940896. Its totient is φ = 6933978480.

The previous prime is 20838952877. The next prime is 20838952973. The reversal of 20838952938 is 83925983802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3081133 + ... + 3087888.

It is an arithmetic number, because the mean of its divisors is an integer number (2609496306).

Almost surely, 2^20838952938 is an apocalyptic number.

20838952938 is an abundant number, since it is smaller than the sum of its proper divisors (20912987958).

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

20838952938 is a wasteful number, since it uses less digits than its factorization.

20838952938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169589.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 20838952938 in words is "twenty billion, eight hundred thirty-eight million, nine hundred fifty-two thousand, nine hundred thirty-eight".