891254648 has 16 divisors (see below), whose sum is σ = 1769402880. Its totient is φ = 419413888.

The previous prime is 891254647. The next prime is 891254657. The reversal of 891254648 is 846452198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891254647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3276536 + ... + 3276807.

It is an arithmetic number, because the mean of its divisors is an integer number (110587680).

Almost surely, 2^891254648 is an apocalyptic number.

It is an amenable number.

891254648 is a deficient number, since it is larger than the sum of its proper divisors (878148232).

891254648 is a wasteful number, since it uses less digits than its factorization.

891254648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6553366 (or 6553362 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 891254648 is about 29853.8883229639. Note that the first 3 decimals coincide. The cubic root of 891254648 is about 962.3519616700.

The spelling of 891254648 in words is "eight hundred ninety-one million, two hundred fifty-four thousand, six hundred forty-eight".