891285011 has 8 divisors (see below), whose sum is σ = 895605360. Its totient is φ = 886973472.

The previous prime is 891285007. The next prime is 891285023. The reversal of 891285011 is 110582198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 891285011 - 2² = 891285007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891281011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285125 + ... + 288233.

It is an arithmetic number, because the mean of its divisors is an integer number (111950670).

Almost surely, 2^891285011 is an apocalyptic number.

891285011 is a deficient number, since it is larger than the sum of its proper divisors (4320349).

891285011 is a wasteful number, since it uses less digits than its factorization.

891285011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 891285011 is about 29854.3968453560. The cubic root of 891285011 is about 962.3628899200.

The spelling of 891285011 in words is "eight hundred ninety-one million, two hundred eighty-five thousand, eleven".