1681875140 has 24 divisors (see below), whose sum is σ = 3853023552. Its totient is φ = 611590880.

The previous prime is 1681875137. The next prime is 1681875187. The reversal of 1681875140 is 415781861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3822224 + ... + 3822663.

It is an arithmetic number, because the mean of its divisors is an integer number (160542648).

Almost surely, 2^1681875140 is an apocalyptic number.

1681875140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1681875140 is an abundant number, since it is smaller than the sum of its proper divisors (2171148412).

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

1681875140 is a wasteful number, since it uses less digits than its factorization.

1681875140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644907 (or 7644905 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 41.

The square root of 1681875140 is about 41010.6710503498. The cubic root of 1681875140 is about 1189.2265152197.

The spelling of 1681875140 in words is "one billion, six hundred eighty-one million, eight hundred seventy-five thousand, one hundred forty".