1920419940 has 48 divisors (see below), whose sum is σ = 5380482240. Its totient is φ = 511797120.

The previous prime is 1920419939. The next prime is 1920419957. The reversal of 1920419940 is 499140291.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98395 + ... + 116285.

It is an arithmetic number, because the mean of its divisors is an integer number (112093380).

Almost surely, 2^1920419940 is an apocalyptic number.

1920419940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920419940 is an abundant number, since it is smaller than the sum of its proper divisors (3460062300).

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

1920419940 is a wasteful number, since it uses less digits than its factorization.

1920419940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19692 (or 19690 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1920419940 is about 43822.5962261480. The cubic root of 1920419940 is about 1242.9836104439.

The spelling of 1920419940 in words is "one billion, nine hundred twenty million, four hundred nineteen thousand, nine hundred forty".