1985636112 has 40 divisors (see below), whose sum is σ = 5248857504. Its totient is φ = 646485504.

The previous prime is 1985636101. The next prime is 1985636123. The reversal of 1985636112 is 2116365891.

It is an interprime number because it is at equal distance from previous prime (1985636101) and next prime (1985636123).

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, 478953 + ... + 483080.

Almost surely, 2^1985636112 is an apocalyptic number.

1985636112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1985636112 is an abundant number, since it is smaller than the sum of its proper divisors (3263221392).

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

1985636112 is a wasteful number, since it uses less digits than its factorization.

1985636112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962087 (or 962081 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 1985636112 is about 44560.4770171954. The cubic root of 1985636112 is about 1256.8975726783.

The spelling of 1985636112 in words is "one billion, nine hundred eighty-five million, six hundred thirty-six thousand, one hundred twelve".