891048816 has 80 divisors (see below), whose sum is σ = 2923027200. Its totient is φ = 254584512.

The previous prime is 891048787. The next prime is 891048817. The reversal of 891048816 is 618840198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891048817) 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, 144306 + ... + 150353.

It is an arithmetic number, because the mean of its divisors is an integer number (36537840).

Almost surely, 2^891048816 is an apocalyptic number.

It is an amenable number.

891048816 is an abundant number, since it is smaller than the sum of its proper divisors (2031978384).

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

891048816 is a wasteful number, since it uses less digits than its factorization.

891048816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294683 (or 294671 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 891048816 is about 29850.4408007654. The cubic root of 891048816 is about 962.2778720780.

The spelling of 891048816 in words is "eight hundred ninety-one million, forty-eight thousand, eight hundred sixteen".