2540881838 has 16 divisors (see below), whose sum is σ = 4160430000. Its totient is φ = 1154217600.

The previous prime is 2540881817. The next prime is 2540881841. The reversal of 2540881838 is 8381880452.

It is a junction number, because it is equal to n+sod(n) for n = 2540881792 and 2540881801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38 + ... + 71286.

It is an arithmetic number, because the mean of its divisors is an integer number (260026875).

Almost surely, 2^2540881838 is an apocalyptic number.

2540881838 is a deficient number, since it is larger than the sum of its proper divisors (1619548162).

2540881838 is a wasteful number, since it uses less digits than its factorization.

2540881838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72883.

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 2540881838 is about 50407.1605825998. The cubic root of 2540881838 is about 1364.5668701406.

The spelling of 2540881838 in words is "two billion, five hundred forty million, eight hundred eighty-one thousand, eight hundred thirty-eight".