891130118 has 4 divisors (see below), whose sum is σ = 1336695180. Its totient is φ = 445565058.

The previous prime is 891130117. The next prime is 891130129. The reversal of 891130118 is 811031198.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×891130118² = 1588225774413387848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891130117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222782528 + ... + 222782531.

It is an arithmetic number, because the mean of its divisors is an integer number (334173795).

Almost surely, 2^891130118 is an apocalyptic number.

891130118 is a deficient number, since it is larger than the sum of its proper divisors (445565062).

891130118 is a wasteful number, since it uses less digits than its factorization.

891130118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445565061.

The product of its (nonzero) digits is 1728, while the sum is 32.

The square root of 891130118 is about 29851.8025921384. The cubic root of 891130118 is about 962.3071382397.

The spelling of 891130118 in words is "eight hundred ninety-one million, one hundred thirty thousand, one hundred eighteen".