2581940000 has 60 divisors (see below), whose sum is σ = 6352008894. Its totient is φ = 1032768000.

The previous prime is 2581939999. The next prime is 2581940047. The reversal of 2581940000 is 491852.

It can be written as a sum of positive squares in 5 ways, for example, as 80656 + 2581859344 = 284^2 + 50812^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44549 + ... + 84548.

Almost surely, 2^2581940000 is an apocalyptic number.

2581940000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2581940000 is an abundant number, since it is smaller than the sum of its proper divisors (3770068894).

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

2581940000 is an equidigital number, since it uses as much as digits as its factorization.

2581940000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129127 (or 129104 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2581940000 is about 50812.7936645881. The cubic root of 2581940000 is about 1371.8776534421.

The spelling of 2581940000 in words is "two billion, five hundred eighty-one million, nine hundred forty thousand".