4781922321 has 8 divisors (see below), whose sum is σ = 6955523424. Its totient is φ = 2898134720.

The previous prime is 4781922319. The next prime is 4781922331. The reversal of 4781922321 is 1232291874.

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

It is a cyclic number.

It is not a de Polignac number, because 4781922321 - 2¹ = 4781922319 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4781922321.

It is not an unprimeable number, because it can be changed into a prime (4781922331) 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, 72453336 + ... + 72453401.

It is an arithmetic number, because the mean of its divisors is an integer number (869440428).

Almost surely, 2^4781922321 is an apocalyptic number.

It is an amenable number.

4781922321 is a deficient number, since it is larger than the sum of its proper divisors (2173601103).

4781922321 is a wasteful number, since it uses less digits than its factorization.

4781922321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144906751.

The product of its digits is 48384, while the sum is 39.

The square root of 4781922321 is about 69151.4448222161. Note that the first 3 decimals coincide. The cubic root of 4781922321 is about 1684.7449852544.

The spelling of 4781922321 in words is "four billion, seven hundred eighty-one million, nine hundred twenty-two thousand, three hundred twenty-one".