780851089 has 16 divisors (see below), whose sum is σ = 840672000. Its totient is φ = 722651904.

The previous prime is 780851083. The next prime is 780851111. The reversal of 780851089 is 980158087.

It is a cyclic number.

It is not a de Polignac number, because 780851089 - 2¹⁵ = 780818321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780851083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370962 + ... + 373060.

It is an arithmetic number, because the mean of its divisors is an integer number (52542000).

Almost surely, 2^780851089 is an apocalyptic number.

780851089 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

780851089 is a deficient number, since it is larger than the sum of its proper divisors (59820911).

780851089 is a wasteful number, since it uses less digits than its factorization.

780851089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 780851089 is about 27943.7128706978. The cubic root of 780851089 is about 920.8510905653.

The spelling of 780851089 in words is "seven hundred eighty million, eight hundred fifty-one thousand, eighty-nine".