1921925779106 has 8 divisors (see below), whose sum is σ = 3034619651280. Its totient is φ = 910385895348.

The previous prime is 1921925779051. The next prime is 1921925779117. The reversal of 1921925779106 is 6019775291291.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25288497056 + ... + 25288497131.

It is an arithmetic number, because the mean of its divisors is an integer number (379327456410).

Almost surely, 2^{1921925779106} is an apocalyptic number.

1921925779106 is a deficient number, since it is larger than the sum of its proper divisors (1112693872174).

1921925779106 is a wasteful number, since it uses less digits than its factorization.

1921925779106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50576994208.

The product of its (nonzero) digits is 4286520, while the sum is 59.

The spelling of 1921925779106 in words is "one trillion, nine hundred twenty-one billion, nine hundred twenty-five million, seven hundred seventy-nine thousand, one hundred six".