1921925792 has 12 divisors (see below), whose sum is σ = 3783791466. Its totient is φ = 960962880.

The previous prime is 1921925773. The next prime is 1921925813. The reversal of 1921925792 is 2975291291.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1287087376 + 634838416 = 35876^2 + 25196^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30030059 + ... + 30030122.

Almost surely, 2^1921925792 is an apocalyptic number.

It is an amenable number.

1921925792 is a deficient number, since it is larger than the sum of its proper divisors (1861865674).

1921925792 is an equidigital number, since it uses as much as digits as its factorization.

1921925792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60060191 (or 60060183 counting only the distinct ones).

The product of its digits is 204120, while the sum is 47.

The square root of 1921925792 is about 43839.7740870092. The cubic root of 1921925792 is about 1243.3084109907.

The spelling of 1921925792 in words is "one billion, nine hundred twenty-one million, nine hundred twenty-five thousand, seven hundred ninety-two".