2540890385 has 32 divisors (see below), whose sum is σ = 3480226560. Its totient is φ = 1762816000.

The previous prime is 2540890357. The next prime is 2540890399. The reversal of 2540890385 is 5830980452.

2540890385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2540890385 - 2¹² = 2540886289 is a prime.

It is a super-2 number, since 2×2540890385² = 12912247897170896450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504761 + ... + 509769.

It is an arithmetic number, because the mean of its divisors is an integer number (108757080).

Almost surely, 2^2540890385 is an apocalyptic number.

It is an amenable number.

2540890385 is a deficient number, since it is larger than the sum of its proper divisors (939336175).

2540890385 is a wasteful number, since it uses less digits than its factorization.

2540890385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 2540890385 is about 50407.2453621501. The cubic root of 2540890385 is about 1364.5684001790.

The spelling of 2540890385 in words is "two billion, five hundred forty million, eight hundred ninety thousand, three hundred eighty-five".