1871140828 has 12 divisors (see below), whose sum is σ = 3278968840. Its totient is φ = 934292592.

The previous prime is 1871140823. The next prime is 1871140841. The reversal of 1871140828 is 8280411781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871140823) 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, 316158 + ... + 322021.

Almost surely, 2^1871140828 is an apocalyptic number.

It is an amenable number.

1871140828 is a deficient number, since it is larger than the sum of its proper divisors (1407828012).

1871140828 is a wasteful number, since it uses less digits than its factorization.

1871140828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638916 (or 638914 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 40.

The square root of 1871140828 is about 43256.6853561389. The cubic root of 1871140828 is about 1232.2594528271.

The spelling of 1871140828 in words is "one billion, eight hundred seventy-one million, one hundred forty thousand, eight hundred twenty-eight".