851143488 has 168 divisors, whose sum is σ = 2583655488. Its totient is φ = 246325248.

The previous prime is 851143453. The next prime is 851143493. The reversal of 851143488 is 884341158.

851143488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×851143488² = 1448890474329612288, which contains 22 as substring.

It is a congruent number.

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, 550845 + ... + 552387.

Almost surely, 2^851143488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851143488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291827744).

851143488 is an abundant number, since it is smaller than the sum of its proper divisors (1732512000).

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

851143488 is a wasteful number, since it uses less digits than its factorization.

851143488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1578 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 851143488 is about 29174.3635406156. The cubic root of 851143488 is about 947.6928271834.

The spelling of 851143488 in words is "eight hundred fifty-one million, one hundred forty-three thousand, four hundred eighty-eight".