1992845220 has 24 divisors (see below), whose sum is σ = 5579966784. Its totient is φ = 531425376.

The previous prime is 1992845207. The next prime is 1992845227. The reversal of 1992845220 is 225482991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1992845227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16606984 + ... + 16607103.

It is an arithmetic number, because the mean of its divisors is an integer number (232498616).

Almost surely, 2^1992845220 is an apocalyptic number.

1992845220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1992845220 is an abundant number, since it is smaller than the sum of its proper divisors (3587121564).

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

1992845220 is a wasteful number, since it uses less digits than its factorization.

1992845220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33214099 (or 33214097 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1992845220 is about 44641.2950080976. The cubic root of 1992845220 is about 1258.4168451024.

The spelling of 1992845220 in words is "one billion, nine hundred ninety-two million, eight hundred forty-five thousand, two hundred twenty".