1920000447 has 12 divisors (see below), whose sum is σ = 2798778840. Its totient is φ = 1268256528.

The previous prime is 1920000421. The next prime is 1920000449. The reversal of 1920000447 is 7440000291.

It is a happy number.

1920000447 is a `hidden beast` number, since 19 + 200 + 0 + 0 + 447 = 666.

It is not a de Polignac number, because 1920000447 - 2²⁸ = 1651564991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1920000447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920000449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 977613 + ... + 979574.

It is an arithmetic number, because the mean of its divisors is an integer number (233231570).

Almost surely, 2^1920000447 is an apocalyptic number.

1920000447 is a deficient number, since it is larger than the sum of its proper divisors (878778393).

1920000447 is a wasteful number, since it uses less digits than its factorization.

1920000447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957302 (or 1957299 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1920000447 is about 43817.8097010793. The cubic root of 1920000447 is about 1242.8930988352.

The spelling of 1920000447 in words is "one billion, nine hundred twenty million, four hundred forty-seven", and thus it is an aban number.