1683643334 has 4 divisors (see below), whose sum is σ = 2525465004. Its totient is φ = 841821666.

The previous prime is 1683643319. The next prime is 1683643363. The reversal of 1683643334 is 4333463861.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1683643334² = 5669309752245271112, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1683643291 and 1683643300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420910832 + ... + 420910835.

It is an arithmetic number, because the mean of its divisors is an integer number (631366251).

Almost surely, 2^1683643334 is an apocalyptic number.

1683643334 is a deficient number, since it is larger than the sum of its proper divisors (841821670).

1683643334 is an equidigital number, since it uses as much as digits as its factorization.

1683643334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841821669.

The product of its digits is 373248, while the sum is 41.

The square root of 1683643334 is about 41032.2231179350. The cubic root of 1683643334 is about 1189.6431229824.

The spelling of 1683643334 in words is "one billion, six hundred eighty-three million, six hundred forty-three thousand, three hundred thirty-four".