4172821338 has 64 divisors (see below), whose sum is σ = 9648460800. Its totient is φ = 1178486400.

The previous prime is 4172821313. The next prime is 4172821357. The reversal of 4172821338 is 8331282714.

It is a super-2 number, since 2×4172821338² = 34824875837736220488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4172821296 and 4172821305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1544713 + ... + 1547411.

It is an arithmetic number, because the mean of its divisors is an integer number (150757200).

Almost surely, 2^4172821338 is an apocalyptic number.

4172821338 is an abundant number, since it is smaller than the sum of its proper divisors (5475639462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4172821338 is a wasteful number, since it uses less digits than its factorization.

4172821338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123.

The product of its digits is 64512, while the sum is 39.

The square root of 4172821338 is about 64597.3787239080. The cubic root of 4172821338 is about 1609.9408871986.

The spelling of 4172821338 in words is "four billion, one hundred seventy-two million, eight hundred twenty-one thousand, three hundred thirty-eight".