6938890001 has 8 divisors (see below), whose sum is σ = 7186722600. Its totient is φ = 6699594384.

The previous prime is 6938889977. The next prime is 6938890027. The reversal of 6938890001 is 1000988396.

It is a Cunningham number, because it is equal to 83300²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 6938890000 = 1^2 + 83300^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6938890001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6938890601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 117866 + ... + 166643.

It is an arithmetic number, because the mean of its divisors is an integer number (898340325).

Almost surely, 2^6938890001 is an apocalyptic number.

It is an amenable number.

6938890001 is a deficient number, since it is larger than the sum of its proper divisors (247832599).

6938890001 is an frugal number, since it uses more digits than its factorization.

6938890001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284596 (or 284538 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 6938890001 is about 83300.0000060024. Note that the first 5 decimals coincide. The cubic root of 6938890001 is about 1907.3482752048.

The spelling of 6938890001 in words is "six billion, nine hundred thirty-eight million, eight hundred ninety thousand, one".