1681794748 has 6 divisors (see below), whose sum is σ = 2943140816. Its totient is φ = 840897372.

The previous prime is 1681794731. The next prime is 1681794757. The reversal of 1681794748 is 8474971861.

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, 210224340 + ... + 210224347.

Almost surely, 2^1681794748 is an apocalyptic number.

It is an amenable number.

1681794748 is a deficient number, since it is larger than the sum of its proper divisors (1261346068).

1681794748 is a wasteful number, since it uses less digits than its factorization.

1681794748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420448691 (or 420448689 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 55.

The square root of 1681794748 is about 41009.6909034926. The cubic root of 1681794748 is about 1189.2075669599.

The spelling of 1681794748 in words is "one billion, six hundred eighty-one million, seven hundred ninety-four thousand, seven hundred forty-eight".