7838348221 has 8 divisors (see below), whose sum is σ = 8563639104. Its totient is φ = 7115176320.

The previous prime is 7838348191. The next prime is 7838348257. The reversal of 7838348221 is 1228438387.

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 7838348221 - 2¹⁹ = 7837823933 is a prime.

It is a super-2 number, since 2×7838348221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7838342221) 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, 522001 + ... + 536806.

It is an arithmetic number, because the mean of its divisors is an integer number (1070454888).

Almost surely, 2^7838348221 is an apocalyptic number.

It is an amenable number.

7838348221 is a deficient number, since it is larger than the sum of its proper divisors (725290883).

7838348221 is a wasteful number, since it uses less digits than its factorization.

7838348221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059491.

The product of its digits is 516096, while the sum is 46.

The square root of 7838348221 is about 88534.4465222435. The cubic root of 7838348221 is about 1986.4372522570.

The spelling of 7838348221 in words is "seven billion, eight hundred thirty-eight million, three hundred forty-eight thousand, two hundred twenty-one".