2489913820 has 12 divisors (see below), whose sum is σ = 5228819064. Its totient is φ = 995965520.

The previous prime is 2489913817. The next prime is 2489913821. The reversal of 2489913820 is 283199842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489913821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62247826 + ... + 62247865.

It is an arithmetic number, because the mean of its divisors is an integer number (435734922).

Almost surely, 2^2489913820 is an apocalyptic number.

2489913820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2489913820 is an abundant number, since it is smaller than the sum of its proper divisors (2738905244).

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

2489913820 is a wasteful number, since it uses less digits than its factorization.

2489913820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124495700 (or 124495698 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 2489913820 is about 49899.0362632386. The cubic root of 2489913820 is about 1355.3811412204.

The spelling of 2489913820 in words is "two billion, four hundred eighty-nine million, nine hundred thirteen thousand, eight hundred twenty".