1985758872 has 16 divisors (see below), whose sum is σ = 4964397240. Its totient is φ = 661919616.

The previous prime is 1985758861. The next prime is 1985758891. The reversal of 1985758872 is 2788575891.

It is a congruent number.

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, 41369953 + ... + 41370000.

Almost surely, 2^1985758872 is an apocalyptic number.

1985758872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1985758872 is an abundant number, since it is smaller than the sum of its proper divisors (2978638368).

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

1985758872 is a wasteful number, since it uses less digits than its factorization.

1985758872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82739962 (or 82739958 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 60.

The square root of 1985758872 is about 44561.8544497421. The cubic root of 1985758872 is about 1256.9234742966.

The spelling of 1985758872 in words is "one billion, nine hundred eighty-five million, seven hundred fifty-eight thousand, eight hundred seventy-two".