916780878 has 48 divisors (see below), whose sum is σ = 2143683360. Its totient is φ = 281489472.

The previous prime is 916780877. The next prime is 916780883. The reversal of 916780878 is 878087619.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916780871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113808 + ... + 121596.

It is an arithmetic number, because the mean of its divisors is an integer number (44660070).

Almost surely, 2^916780878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 916780878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071841680).

916780878 is an abundant number, since it is smaller than the sum of its proper divisors (1226902482).

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

916780878 is a wasteful number, since it uses less digits than its factorization.

916780878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8313 (or 8310 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The square root of 916780878 is about 30278.3896203216. The cubic root of 916780878 is about 971.4531229933.

The spelling of 916780878 in words is "nine hundred sixteen million, seven hundred eighty thousand, eight hundred seventy-eight".