1683945434 has 16 divisors (see below), whose sum is σ = 2536333800. Its totient is φ = 838508544.

The previous prime is 1683945413. The next prime is 1683945449. The reversal of 1683945434 is 4345493861.

It can be written as a sum of positive squares in 4 ways, for example, as 1256489809 + 427455625 = 35447^2 + 20675^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627704 + ... + 630380.

Almost surely, 2^1683945434 is an apocalyptic number.

1683945434 is a deficient number, since it is larger than the sum of its proper divisors (852388366).

1683945434 is a wasteful number, since it uses less digits than its factorization.

1683945434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857.

The product of its digits is 1244160, while the sum is 47.

The square root of 1683945434 is about 41035.9042059512. The cubic root of 1683945434 is about 1189.7142721953.

The spelling of 1683945434 in words is "one billion, six hundred eighty-three million, nine hundred forty-five thousand, four hundred thirty-four".