4640681854 has 16 divisors (see below), whose sum is σ = 7020453888. Its totient is φ = 2300554872.

The previous prime is 4640681849. The next prime is 4640681861. The reversal of 4640681854 is 4581860464.

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 7 ways as a sum of consecutive naturals, for example, 447759 + ... + 458005.

It is an arithmetic number, because the mean of its divisors is an integer number (438778368).

Almost surely, 2^4640681854 is an apocalyptic number.

4640681854 is a deficient number, since it is larger than the sum of its proper divisors (2379772034).

4640681854 is a wasteful number, since it uses less digits than its factorization.

4640681854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12159.

The product of its (nonzero) digits is 737280, while the sum is 46.

The square root of 4640681854 is about 68122.5502605415. The cubic root of 4640681854 is about 1667.9918795982.

The spelling of 4640681854 in words is "four billion, six hundred forty million, six hundred eighty-one thousand, eight hundred fifty-four".