4903865721 has 12 divisors (see below), whose sum is σ = 7256127060. Its totient is φ = 3189505920.

The previous prime is 4903865717. The next prime is 4903865767. The reversal of 4903865721 is 1275683094.

4903865721 is a `hidden beast` number, since 49 + 0 + 38 + 6 + 572 + 1 = 666.

4903865721 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1224230121 + 3679635600 = 34989^2 + 60660^2 .

It is not a de Polignac number, because 4903865721 - 2² = 4903865717 is a prime.

4903865721 is strictly pandigital in base 10.

It is not an unprimeable number, because it can be changed into a prime (4903865521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6644436 + ... + 6645173.

It is an arithmetic number, because the mean of its divisors is an integer number (604677255).

It is a 1-persistent number, because it is pandigital, but 2⋅4903865721 = 9807731442 is not.

Almost surely, 2^4903865721 is an apocalyptic number.

4903865721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4903865721 is a deficient number, since it is larger than the sum of its proper divisors (2352261339).

4903865721 is a wasteful number, since it uses less digits than its factorization.

4903865721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13289656 (or 13289653 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 4903865721 is about 70027.6068490135. The cubic root of 4903865721 is about 1698.9457963449.

The spelling of 4903865721 in words is "four billion, nine hundred three million, eight hundred sixty-five thousand, seven hundred twenty-one".