20969349738 has 8 divisors (see below), whose sum is σ = 41938699488. Its totient is φ = 6989783244.

The previous prime is 20969349707. The next prime is 20969349749. The reversal of 20969349738 is 83794396902.

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

20969349738 is an admirable number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 1747445806 + ... + 1747445817.

It is an arithmetic number, because the mean of its divisors is an integer number (5242337436).

Almost surely, 2^20969349738 is an apocalyptic number.

20969349738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20969349738 is a wasteful number, since it uses less digits than its factorization.

20969349738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494891628.

The product of its (nonzero) digits is 17635968, while the sum is 60.

The spelling of 20969349738 in words is "twenty billion, nine hundred sixty-nine million, three hundred forty-nine thousand, seven hundred thirty-eight".