4494728687 has 4 divisors (see below), whose sum is σ = 4535964840. Its totient is φ = 4453492536.

The previous prime is 4494728683. The next prime is 4494728699. The reversal of 4494728687 is 7868274944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4494728687 - 2² = 4494728683 is a prime.

It is a Duffinian number.

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 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, 20617913 + ... + 20618130.

It is an arithmetic number, because the mean of its divisors is an integer number (1133991210).

Almost surely, 2^4494728687 is an apocalyptic number.

4494728687 is a deficient number, since it is larger than the sum of its proper divisors (41236153).

4494728687 is a wasteful number, since it uses less digits than its factorization.

4494728687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41236152.

The product of its digits is 21676032, while the sum is 59.

The square root of 4494728687 is about 67042.7377648019. The cubic root of 4494728687 is about 1650.3187247162.

The spelling of 4494728687 in words is "four billion, four hundred ninety-four million, seven hundred twenty-eight thousand, six hundred eighty-seven".