1871081668 has 12 divisors (see below), whose sum is σ = 3285965200. Its totient is φ = 932234472.

The previous prime is 1871081657. The next prime is 1871081669. The reversal of 1871081668 is 8661801781.

It is not an unprimeable number, because it can be changed into a prime (1871081669) 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, 825318 + ... + 827581.

Almost surely, 2^1871081668 is an apocalyptic number.

It is an amenable number.

1871081668 is a deficient number, since it is larger than the sum of its proper divisors (1414883532).

1871081668 is a wasteful number, since it uses less digits than its factorization.

1871081668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653186 (or 1653184 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 1871081668 is about 43256.0015257999. The cubic root of 1871081668 is about 1232.2464658770.

The spelling of 1871081668 in words is "one billion, eight hundred seventy-one million, eighty-one thousand, six hundred sixty-eight".