891160380 has 240 divisors, whose sum is σ = 3123356544. Its totient is φ = 210833280.

The previous prime is 891160327. The next prime is 891160393. The reversal of 891160380 is 83061198.

891160380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 765679 + ... + 766841.

Almost surely, 2^891160380 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 891160380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561678272).

891160380 is an abundant number, since it is smaller than the sum of its proper divisors (2232196164).

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

891160380 is a wasteful number, since it uses less digits than its factorization.

891160380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 891160380 is about 29852.3094583987. The cubic root of 891160380 is about 962.3180311529.

The spelling of 891160380 in words is "eight hundred ninety-one million, one hundred sixty thousand, three hundred eighty".