2540364985 has 8 divisors (see below), whose sum is σ = 3053272896. Its totient is φ = 2029068720.

The previous prime is 2540364977. The next prime is 2540364991. The reversal of 2540364985 is 5894630452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2540364985 - 2³ = 2540364977 is a prime.

It is a Duffinian 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, 399439 + ... + 405748.

It is an arithmetic number, because the mean of its divisors is an integer number (381659112).

Almost surely, 2^2540364985 is an apocalyptic number.

It is an amenable number.

2540364985 is a deficient number, since it is larger than the sum of its proper divisors (512907911).

2540364985 is an equidigital number, since it uses as much as digits as its factorization.

2540364985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805823.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The square root of 2540364985 is about 50402.0335403245. The cubic root of 2540364985 is about 1364.4743394954.

The spelling of 2540364985 in words is "two billion, five hundred forty million, three hundred sixty-four thousand, nine hundred eighty-five".