851389080 has 32 divisors (see below), whose sum is σ = 2554167600. Its totient is φ = 227037056.

The previous prime is 851389073. The next prime is 851389093. The reversal of 851389080 is 80983158.

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, 3547335 + ... + 3547574.

Almost surely, 2^851389080 is an apocalyptic number.

It is an amenable number.

851389080 is an abundant number, since it is smaller than the sum of its proper divisors (1702778520).

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

851389080 is a wasteful number, since it uses less digits than its factorization.

851389080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094923 (or 7094919 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 851389080 is about 29178.5722748732. The cubic root of 851389080 is about 947.7839686489.

The spelling of 851389080 in words is "eight hundred fifty-one million, three hundred eighty-nine thousand, eighty".