2021863480 has 192 divisors, whose sum is σ = 5782371840. Its totient is φ = 630540288.

The previous prime is 2021863471. The next prime is 2021863537. The reversal of 2021863480 is 843681202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1859497 + ... + 1860583.

It is an arithmetic number, because the mean of its divisors is an integer number (30116520).

Almost surely, 2^2021863480 is an apocalyptic number.

2021863480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021863480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2891185920).

2021863480 is an abundant number, since it is smaller than the sum of its proper divisors (3760508360).

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

2021863480 is a wasteful number, since it uses less digits than its factorization.

2021863480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 1187 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 2021863480 is about 44965.1362724500. The cubic root of 2021863480 is about 1264.4954645103.

The spelling of 2021863480 in words is "two billion, twenty-one million, eight hundred sixty-three thousand, four hundred eighty".