7838054821 has 8 divisors (see below), whose sum is σ = 7925480640. Its totient is φ = 7750946112.

The previous prime is 7838054813. The next prime is 7838054827. The reversal of 7838054821 is 1284508387.

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 7838054821 - 2³ = 7838054813 is a prime.

It is a super-2 number, since 2×7838054821² (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 (7838054827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29395 + ... + 128608.

It is an arithmetic number, because the mean of its divisors is an integer number (990685080).

Almost surely, 2^7838054821 is an apocalyptic number.

It is an amenable number.

7838054821 is a deficient number, since it is larger than the sum of its proper divisors (87425819).

7838054821 is a wasteful number, since it uses less digits than its factorization.

7838054821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158555.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 7838054821 is about 88532.7895245598. The cubic root of 7838054821 is about 1986.4124669347.

The spelling of 7838054821 in words is "seven billion, eight hundred thirty-eight million, fifty-four thousand, eight hundred twenty-one".