1920210020 has 12 divisors (see below), whose sum is σ = 4032441084. Its totient is φ = 768084000.

The previous prime is 1920210011. The next prime is 1920210037. The reversal of 1920210020 is 200120291.

It can be written as a sum of positive squares in 2 ways, for example, as 735060544 + 1185149476 = 27112^2 + 34426^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48005231 + ... + 48005270.

It is an arithmetic number, because the mean of its divisors is an integer number (336036757).

Almost surely, 2^1920210020 is an apocalyptic number.

1920210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920210020 is an abundant number, since it is smaller than the sum of its proper divisors (2112231064).

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

1920210020 is a wasteful number, since it uses less digits than its factorization.

1920210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96010510 (or 96010508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1920210020 is about 43820.2010492878. The cubic root of 1920210020 is about 1242.9383188522.

The spelling of 1920210020 in words is "one billion, nine hundred twenty million, two hundred ten thousand, twenty".