1673871885 has 40 divisors (see below), whose sum is σ = 3429229056. Its totient is φ = 765197280.

The previous prime is 1673871869. The next prime is 1673871887. The reversal of 1673871885 is 5881783761.

It is a happy number.

It is not a de Polignac number, because 1673871885 - 2⁴ = 1673871869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673871887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 292381 + ... + 298050.

Almost surely, 2^1673871885 is an apocalyptic number.

1673871885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1673871885 is an abundant number, since it is smaller than the sum of its proper divisors (1755357171).

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

1673871885 is an equidigital number, since it uses as much as digits as its factorization.

1673871885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590455 (or 590446 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 1673871885 is about 40912.9794197392. The cubic root of 1673871885 is about 1187.3371914931.

The spelling of 1673871885 in words is "one billion, six hundred seventy-three million, eight hundred seventy-one thousand, eight hundred eighty-five".