1683043213 has 2 divisors, whose sum is σ = 1683043214. Its totient is φ = 1683043212.

The previous prime is 1683043189. The next prime is 1683043223. The reversal of 1683043213 is 3123403861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1306605609 + 376437604 = 36147^2 + 19402^2 .

It is an emirp because it is prime and its reverse (3123403861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1683043213 - 2⁹ = 1683042701 is a prime.

It is a super-3 number, since 3×1683043213³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1683043223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841521606 + 841521607.

It is an arithmetic number, because the mean of its divisors is an integer number (841521607).

Almost surely, 2^1683043213 is an apocalyptic number.

It is an amenable number.

1683043213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683043213 is an equidigital number, since it uses as much as digits as its factorization.

1683043213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1683043213 is about 41024.9096647391. The cubic root of 1683043213 is about 1189.5017599736.

The spelling of 1683043213 in words is "one billion, six hundred eighty-three million, forty-three thousand, two hundred thirteen".