4815400321 has 4 divisors (see below), whose sum is σ = 4836428500. Its totient is φ = 4794372144.

The previous prime is 4815400319. The next prime is 4815400339. The reversal of 4815400321 is 1230045184.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4164895296 + 650505025 = 64536^2 + 25505^2 .

It is a cyclic number.

It is not a de Polignac number, because 4815400321 - 2¹ = 4815400319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4815400321.

It is not an unprimeable number, because it can be changed into a prime (4815400621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10513746 + ... + 10514203.

It is an arithmetic number, because the mean of its divisors is an integer number (1209107125).

Almost surely, 2^4815400321 is an apocalyptic number.

It is an amenable number.

4815400321 is a deficient number, since it is larger than the sum of its proper divisors (21028179).

4815400321 is a wasteful number, since it uses less digits than its factorization.

4815400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21028178.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 4815400321 is about 69393.0855417166. The cubic root of 4815400321 is about 1688.6674510270.

The spelling of 4815400321 in words is "four billion, eight hundred fifteen million, four hundred thousand, three hundred twenty-one".