1681042376 has 16 divisors (see below), whose sum is σ = 3394412700. Its totient is φ = 775865664.

The previous prime is 1681042369. The next prime is 1681042403. The reversal of 1681042376 is 6732401861.

It can be written as a sum of positive squares in 2 ways, for example, as 1645924900 + 35117476 = 40570^2 + 5926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8081831 + ... + 8082038.

Almost surely, 2^1681042376 is an apocalyptic number.

It is an amenable number.

1681042376 is an abundant number, since it is smaller than the sum of its proper divisors (1713370324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1681042376 is a wasteful number, since it uses less digits than its factorization.

1681042376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16163888 (or 16163884 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1681042376 is about 41000.5167772310. The cubic root of 1681042376 is about 1189.0302048626.

The spelling of 1681042376 in words is "one billion, six hundred eighty-one million, forty-two thousand, three hundred seventy-six".