4494728686 has 16 divisors (see below), whose sum is σ = 7764071040. Its totient is φ = 1911606840.

The previous prime is 4494728683. The next prime is 4494728699. The reversal of 4494728686 is 6868274944.

It is a self number, because there is not a number n which added to its sum of digits gives 4494728686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4494728683) 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, 1223556 + ... + 1227223.

It is an arithmetic number, because the mean of its divisors is an integer number (485254440).

Almost surely, 2^4494728686 is an apocalyptic number.

4494728686 is a deficient number, since it is larger than the sum of its proper divisors (3269342354).

4494728686 is a wasteful number, since it uses less digits than its factorization.

4494728686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450919.

The product of its digits is 18579456, while the sum is 58.

The square root of 4494728686 is about 67042.7377573440. The cubic root of 4494728686 is about 1650.3187245938.

The spelling of 4494728686 in words is "four billion, four hundred ninety-four million, seven hundred twenty-eight thousand, six hundred eighty-six".