851987084 has 48 divisors (see below), whose sum is σ = 1653347808. Its totient is φ = 381708288.

The previous prime is 851987077. The next prime is 851987089. The reversal of 851987084 is 480789158.

It is not an unprimeable number, because it can be changed into a prime (851987089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265739 + ... + 268925.

It is an arithmetic number, because the mean of its divisors is an integer number (34444746).

Almost surely, 2^851987084 is an apocalyptic number.

It is an amenable number.

851987084 is a deficient number, since it is larger than the sum of its proper divisors (801360724).

851987084 is a wasteful number, since it uses less digits than its factorization.

851987084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3352 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 851987084 is about 29188.8177903799. The cubic root of 851987084 is about 948.0058201973.

The spelling of 851987084 in words is "eight hundred fifty-one million, nine hundred eighty-seven thousand, eighty-four".