2540346918 has 32 divisors (see below), whose sum is σ = 5319772416. Its totient is φ = 807188448.

The previous prime is 2540346889. The next prime is 2540346923. The reversal of 2540346918 is 8196430452.

It is a self number, because there is not a number n which added to its sum of digits gives 2540346918.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9021 + ... + 71847.

It is an arithmetic number, because the mean of its divisors is an integer number (166242888).

Almost surely, 2^2540346918 is an apocalyptic number.

2540346918 is an abundant number, since it is smaller than the sum of its proper divisors (2779425498).

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

2540346918 is a wasteful number, since it uses less digits than its factorization.

2540346918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63148.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2540346918 is about 50401.8543111263. The cubic root of 2540346918 is about 1364.4711047875.

The spelling of 2540346918 in words is "two billion, five hundred forty million, three hundred forty-six thousand, nine hundred eighteen".