1683813556 has 12 divisors (see below), whose sum is σ = 2947855680. Its totient is φ = 841569080.

The previous prime is 1683813541. The next prime is 1683813557. The reversal of 1683813556 is 6553183861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683813557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73036 + ... + 93283.

It is an arithmetic number, because the mean of its divisors is an integer number (245654640).

Almost surely, 2^1683813556 is an apocalyptic number.

It is an amenable number.

1683813556 is a deficient number, since it is larger than the sum of its proper divisors (1264042124).

1683813556 is a wasteful number, since it uses less digits than its factorization.

1683813556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168854 (or 168852 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The square root of 1683813556 is about 41034.2973133451. The cubic root of 1683813556 is about 1189.6832139374.

The spelling of 1683813556 in words is "one billion, six hundred eighty-three million, eight hundred thirteen thousand, five hundred fifty-six".