1921946304 has 56 divisors (see below), whose sum is σ = 5098420080. Its totient is φ = 638977024.

The previous prime is 1921946293. The next prime is 1921946329. The reversal of 1921946304 is 4036491291.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61822 + ... + 87554.

Almost surely, 2^1921946304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1921946304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2549210040).

1921946304 is an abundant number, since it is smaller than the sum of its proper divisors (3176473776).

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

1921946304 is a wasteful number, since it uses less digits than its factorization.

1921946304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26137 (or 26127 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1921946304 is about 43840.0080291963. The cubic root of 1921946304 is about 1243.3128340979.

The spelling of 1921946304 in words is "one billion, nine hundred twenty-one million, nine hundred forty-six thousand, three hundred four".