1683743401 has 2 divisors, whose sum is σ = 1683743402. Its totient is φ = 1683743400.

The previous prime is 1683743381. The next prime is 1683743407. The reversal of 1683743401 is 1043473861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047493225 + 636250176 = 32365^2 + 25224^2 .

It is an emirp because it is prime and its reverse (1043473861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1683743401 is a prime.

It is a super-2 number, since 2×1683743401² = 5669983680822093602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1683743407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841871700 + 841871701.

It is an arithmetic number, because the mean of its divisors is an integer number (841871701).

Almost surely, 2^1683743401 is an apocalyptic number.

It is an amenable number.

1683743401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683743401 is an equidigital number, since it uses as much as digits as its factorization.

1683743401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1683743401 is about 41033.4424707457. The cubic root of 1683743401 is about 1189.6666912480. Note that the first 4 decimals are identical.

The spelling of 1683743401 in words is "one billion, six hundred eighty-three million, seven hundred forty-three thousand, four hundred one".