851530650 has 48 divisors (see below), whose sum is σ = 2113790304. Its totient is φ = 226860480.

The previous prime is 851530639. The next prime is 851530711. The reversal of 851530650 is 56035158.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215997 + ... + 219903.

It is an arithmetic number, because the mean of its divisors is an integer number (44037298).

Almost surely, 2^851530650 is an apocalyptic number.

851530650 is an abundant number, since it is smaller than the sum of its proper divisors (1262259654).

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

851530650 is a wasteful number, since it uses less digits than its factorization.

851530650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375 (or 5370 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 851530650 is about 29180.9980980775. The cubic root of 851530650 is about 947.8364986234.

The spelling of 851530650 in words is "eight hundred fifty-one million, five hundred thirty thousand, six hundred fifty".