2540581782 has 32 divisors (see below), whose sum is σ = 5158080000. Its totient is φ = 834066240.

The previous prime is 2540581759. The next prime is 2540581793. The reversal of 2540581782 is 2871850452.

It is a congruent number.

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, 505719 + ... + 510717.

It is an arithmetic number, because the mean of its divisors is an integer number (161190000).

Almost surely, 2^2540581782 is an apocalyptic number.

2540581782 is an abundant number, since it is smaller than the sum of its proper divisors (2617498218).

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

2540581782 is a wasteful number, since it uses less digits than its factorization.

2540581782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268.

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 2540581782 is about 50404.1841715546. The cubic root of 2540581782 is about 1364.5131535412.

The spelling of 2540581782 in words is "two billion, five hundred forty million, five hundred eighty-one thousand, seven hundred eighty-two".