1684934941 has 2 divisors, whose sum is σ = 1684934942. Its totient is φ = 1684934940.

The previous prime is 1684934939. The next prime is 1684934963. The reversal of 1684934941 is 1494394861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1671583225 + 13351716 = 40885^2 + 3654^2 .

It is a cyclic number.

It is not a de Polignac number, because 1684934941 - 2¹ = 1684934939 is a prime.

Together with 1684934939, 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 (1684934981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842467470 + 842467471.

It is an arithmetic number, because the mean of its divisors is an integer number (842467471).

Almost surely, 2^1684934941 is an apocalyptic number.

It is an amenable number.

1684934941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684934941 is an equidigital number, since it uses as much as digits as its factorization.

1684934941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 1684934941 is about 41047.9590357426. The cubic root of 1684934941 is about 1189.9472568013.

The spelling of 1684934941 in words is "one billion, six hundred eighty-four million, nine hundred thirty-four thousand, nine hundred forty-one".