1852961985 has 96 divisors (see below), whose sum is σ = 3913728000. Its totient is φ = 792125568.

The previous prime is 1852961941. The next prime is 1852961987. The reversal of 1852961985 is 5891692581.

1852961985 is a `hidden beast` number, since 18 + 5 + 2 + 9 + 619 + 8 + 5 = 666.

It is not a de Polignac number, because 1852961985 - 2²² = 1848767681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1852961987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 470856 + ... + 474774.

It is an arithmetic number, because the mean of its divisors is an integer number (40768000).

Almost surely, 2^1852961985 is an apocalyptic number.

1852961985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1852961985 is an abundant number, since it is smaller than the sum of its proper divisors (2060766015).

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

1852961985 is a wasteful number, since it uses less digits than its factorization.

1852961985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035 (or 4032 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 54.

The square root of 1852961985 is about 43046.0449402730. The cubic root of 1852961985 is about 1228.2558364583.

The spelling of 1852961985 in words is "one billion, eight hundred fifty-two million, nine hundred sixty-one thousand, nine hundred eighty-five".