2540287641 has 8 divisors (see below), whose sum is σ = 3395135520. Its totient is φ = 1689482432.

The previous prime is 2540287627. The next prime is 2540287649. The reversal of 2540287641 is 1467820452.

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

It is a cyclic number.

It is not a de Polignac number, because 2540287641 - 2⁵ = 2540287609 is a prime.

It is a super-2 number, since 2×2540287641² = 12906122598034689762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2540287641.

It is not an unprimeable number, because it can be changed into a prime (2540287649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009200 + ... + 1011713.

It is an arithmetic number, because the mean of its divisors is an integer number (424391940).

Almost surely, 2^2540287641 is an apocalyptic number.

It is an amenable number.

2540287641 is a deficient number, since it is larger than the sum of its proper divisors (854847879).

2540287641 is a wasteful number, since it uses less digits than its factorization.

2540287641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021335.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 2540287641 is about 50401.2662638549. The cubic root of 2540287641 is about 1364.4604917511.

The spelling of 2540287641 in words is "two billion, five hundred forty million, two hundred eighty-seven thousand, six hundred forty-one".