891261316 has 81 divisors (see below), whose sum is σ = 1823059063. Its totient is φ = 380937040.

The previous prime is 891261313. The next prime is 891261323. The reversal of 891261316 is 613162198.

The square root of 891261316 is 29854.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891261311) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15106095 + ... + 15106153.

Almost surely, 2^891261316 is an apocalyptic number.

891261316 is the 29854-th square number.

It is an amenable number.

891261316 is an abundant number, since it is smaller than the sum of its proper divisors (931797747).

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

891261316 is a wasteful number, since it uses less digits than its factorization.

891261316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 95 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The cubic root of 891261316 is about 962.3543616377.

The spelling of 891261316 in words is "eight hundred ninety-one million, two hundred sixty-one thousand, three hundred sixteen".