1985086672 has 20 divisors (see below), whose sum is σ = 3849565120. Its totient is φ = 991650528.

The previous prime is 1985086633. The next prime is 1985086673. The reversal of 1985086672 is 2766805891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985086673) 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, 37272 + ... + 73207.

It is an arithmetic number, because the mean of its divisors is an integer number (192478256).

Almost surely, 2^1985086672 is an apocalyptic number.

It is an amenable number.

1985086672 is a deficient number, since it is larger than the sum of its proper divisors (1864478448).

1985086672 is a wasteful number, since it uses less digits than its factorization.

1985086672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111610 (or 111604 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 1985086672 is about 44554.3114860953. The cubic root of 1985086672 is about 1256.7816310740.

The spelling of 1985086672 in words is "one billion, nine hundred eighty-five million, eighty-six thousand, six hundred seventy-two".