2564843000 has 32 divisors (see below), whose sum is σ = 6001734960. Its totient is φ = 1025936800.

The previous prime is 2564842967. The next prime is 2564843011. The reversal of 2564843000 is 3484652.

It is a super-2 number, since 2×2564843000² = 13156839229298000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281422 + ... + 1283421.

Almost surely, 2^2564843000 is an apocalyptic number.

2564843000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2564843000 is an abundant number, since it is smaller than the sum of its proper divisors (3436891960).

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

2564843000 is a wasteful number, since it uses less digits than its factorization.

2564843000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564864 (or 2564850 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2564843000 is about 50644.2790451202. The cubic root of 2564843000 is about 1368.8428611685.

The spelling of 2564843000 in words is "two billion, five hundred sixty-four million, eight hundred forty-three thousand".