6894000181 has 2 divisors, whose sum is σ = 6894000182. Its totient is φ = 6894000180.

The previous prime is 6894000167. The next prime is 6894000209. The reversal of 6894000181 is 1810004986.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6884020900 + 9979281 = 82970^2 + 3159^2 .

It is a cyclic number.

It is not a de Polignac number, because 6894000181 - 2⁹ = 6893999669 is a prime.

It is a super-2 number, since 2×6894000181² = 95054476991256065522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6894000181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6894000101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3447000090 + 3447000091.

It is an arithmetic number, because the mean of its divisors is an integer number (3447000091).

Almost surely, 2^6894000181 is an apocalyptic number.

It is an amenable number.

6894000181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6894000181 is an equidigital number, since it uses as much as digits as its factorization.

6894000181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 6894000181 is about 83030.1161085543. The cubic root of 6894000181 is about 1903.2262988084.

The spelling of 6894000181 in words is "six billion, eight hundred ninety-four million, one hundred eighty-one", and thus it is an aban number.