891914768 has 20 divisors (see below), whose sum is σ = 1730069328. Its totient is φ = 445445280.

The previous prime is 891914761. The next prime is 891914773. The reversal of 891914768 is 867419198.

It is not an unprimeable number, because it can be changed into a prime (891914761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17438 + ... + 45693.

Almost surely, 2^891914768 is an apocalyptic number.

It is an amenable number.

891914768 is a deficient number, since it is larger than the sum of its proper divisors (838154560).

891914768 is a wasteful number, since it uses less digits than its factorization.

891914768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64022 (or 64016 counting only the distinct ones).

The product of its digits is 870912, while the sum is 53.

The square root of 891914768 is about 29864.9421228302. The cubic root of 891914768 is about 962.5894961027.

The spelling of 891914768 in words is "eight hundred ninety-one million, nine hundred fourteen thousand, seven hundred sixty-eight".