681049183 has 2 divisors, whose sum is σ = 681049184. Its totient is φ = 681049182.

The previous prime is 681049181. The next prime is 681049217. The reversal of 681049183 is 381940186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681049183 - 2¹ = 681049181 is a prime.

Together with 681049181, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681049181) 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 as a sum of consecutive naturals, namely, 340524591 + 340524592.

It is an arithmetic number, because the mean of its divisors is an integer number (340524592).

Almost surely, 2^681049183 is an apocalyptic number.

681049183 is a deficient number, since it is larger than the sum of its proper divisors (1).

681049183 is an equidigital number, since it uses as much as digits as its factorization.

681049183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 681049183 is about 26096.9190327134. The cubic root of 681049183 is about 879.8179646715.

The spelling of 681049183 in words is "six hundred eighty-one million, forty-nine thousand, one hundred eighty-three".