2009868420 has 48 divisors (see below), whose sum is σ = 6431580288. Its totient is φ = 459398400.

The previous prime is 2009868389. The next prime is 2009868433. The reversal of 2009868420 is 248689002.

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, 2392281 + ... + 2393120.

It is an arithmetic number, because the mean of its divisors is an integer number (133991256).

Almost surely, 2^2009868420 is an apocalyptic number.

2009868420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009868420 is an abundant number, since it is smaller than the sum of its proper divisors (4421711868).

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

2009868420 is a wasteful number, since it uses less digits than its factorization.

2009868420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785420 (or 4785418 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 2009868420 is about 44831.5560738193. The cubic root of 2009868420 is about 1261.9898892686.

The spelling of 2009868420 in words is "two billion, nine million, eight hundred sixty-eight thousand, four hundred twenty".