851983764 has 24 divisors (see below), whose sum is σ = 2104901568. Its totient is φ = 267288960.

The previous prime is 851983751. The next prime is 851983787. The reversal of 851983764 is 467389158.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 2087992 + ... + 2088399.

It is an arithmetic number, because the mean of its divisors is an integer number (87704232).

Almost surely, 2^851983764 is an apocalyptic number.

It is an amenable number.

851983764 is an abundant number, since it is smaller than the sum of its proper divisors (1252917804).

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

851983764 is a wasteful number, since it uses less digits than its factorization.

851983764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176415 (or 4176413 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 851983764 is about 29188.7609192305. The cubic root of 851983764 is about 948.0045888079.

The spelling of 851983764 in words is "eight hundred fifty-one million, nine hundred eighty-three thousand, seven hundred sixty-four".