1921011848 has 16 divisors (see below), whose sum is σ = 4116454080. Its totient is φ = 823290768.

The previous prime is 1921011811. The next prime is 1921011877. The reversal of 1921011848 is 8481101291.

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, 17151836 + ... + 17151947.

It is an arithmetic number, because the mean of its divisors is an integer number (257278380).

Almost surely, 2^1921011848 is an apocalyptic number.

It is an amenable number.

1921011848 is an abundant number, since it is smaller than the sum of its proper divisors (2195442232).

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

1921011848 is a wasteful number, since it uses less digits than its factorization.

1921011848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34303796 (or 34303792 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1921011848 is about 43829.3491624049. The cubic root of 1921011848 is about 1243.1113006350. Note that the first 3 decimals are identical.

The spelling of 1921011848 in words is "one billion, nine hundred twenty-one million, eleven thousand, eight hundred forty-eight".