851633652 has 24 divisors (see below), whose sum is σ = 1989435616. Its totient is φ = 283550688.

The previous prime is 851633621. The next prime is 851633663. The reversal of 851633652 is 256336158.

It is a self number, because there is not a number n which added to its sum of digits gives 851633652.

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, 29938 + ... + 50985.

Almost surely, 2^851633652 is an apocalyptic number.

It is an amenable number.

851633652 is an abundant number, since it is smaller than the sum of its proper divisors (1137801964).

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

851633652 is a wasteful number, since it uses less digits than its factorization.

851633652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81807 (or 81805 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 851633652 is about 29182.7629260836. The cubic root of 851633652 is about 947.8747141666.

The spelling of 851633652 in words is "eight hundred fifty-one million, six hundred thirty-three thousand, six hundred fifty-two".