1920830625 has 240 divisors, whose sum is σ = 4359104640. Its totient is φ = 831600000.

The previous prime is 1920830581. The next prime is 1920830627. The reversal of 1920830625 is 5260380291.

1920830625 is a `hidden beast` number, since 1 + 9 + 20 + 8 + 3 + 0 + 625 = 666.

1920830625 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1920830625 - 2⁷ = 1920830497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1920830625.

It is not an unprimeable number, because it can be changed into a prime (1920830627) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 19018075 + ... + 19018175.

It is an arithmetic number, because the mean of its divisors is an integer number (18162936).

Almost surely, 2^1920830625 is an apocalyptic number.

1920830625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1920830625 is an abundant number, since it is smaller than the sum of its proper divisors (2438274015).

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

1920830625 is a wasteful number, since it uses less digits than its factorization.

1920830625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1920830625 is about 43827.2817432247. The cubic root of 1920830625 is about 1243.0722088331.

The spelling of 1920830625 in words is "one billion, nine hundred twenty million, eight hundred thirty thousand, six hundred twenty-five".