1921356056 has 16 divisors (see below), whose sum is σ = 3603029040. Its totient is φ = 960548320.

The previous prime is 1921355999. The next prime is 1921356061. The reversal of 1921356056 is 6506531291.

It is a congruent number.

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, 81086 + ... + 102066.

It is an arithmetic number, because the mean of its divisors is an integer number (225189315).

Almost surely, 2^1921356056 is an apocalyptic number.

It is an amenable number.

1921356056 is a deficient number, since it is larger than the sum of its proper divisors (1681672984).

1921356056 is a wasteful number, since it uses less digits than its factorization.

1921356056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32434 (or 32430 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1921356056 is about 43833.2756704310. The cubic root of 1921356056 is about 1243.1855433318.

The spelling of 1921356056 in words is "one billion, nine hundred twenty-one million, three hundred fifty-six thousand, fifty-six".