2640245518 has 8 divisors (see below), whose sum is σ = 3978128448. Its totient is φ = 1314202704.

The previous prime is 2640245473. The next prime is 2640245533. The reversal of 2640245518 is 8155420462.

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

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 3 ways as a sum of consecutive naturals, for example, 2959471 + ... + 2960362.

It is an arithmetic number, because the mean of its divisors is an integer number (497266056).

Almost surely, 2^2640245518 is an apocalyptic number.

2640245518 is a deficient number, since it is larger than the sum of its proper divisors (1337882930).

2640245518 is a wasteful number, since it uses less digits than its factorization.

2640245518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920058.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 2640245518 is about 51383.3194529120. The cubic root of 2640245518 is about 1382.1274889492.

The spelling of 2640245518 in words is "two billion, six hundred forty million, two hundred forty-five thousand, five hundred eighteen".