1920208880 has 20 divisors (see below), whose sum is σ = 4464485832. Its totient is φ = 768083520.

The previous prime is 1920208879. The next prime is 1920208891. The reversal of 1920208880 is 888020291.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 12001226 + ... + 12001385.

Almost surely, 2^1920208880 is an apocalyptic number.

1920208880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920208880 is an abundant number, since it is smaller than the sum of its proper divisors (2544276952).

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

1920208880 is a wasteful number, since it uses less digits than its factorization.

1920208880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24002624 (or 24002618 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1920208880 is about 43820.1880415865. The cubic root of 1920208880 is about 1242.9380728809.

The spelling of 1920208880 in words is "one billion, nine hundred twenty million, two hundred eight thousand, eight hundred eighty".