811989118 has 8 divisors (see below), whose sum is σ = 1218421512. Its totient is φ = 405848616.

The previous prime is 811989103. The next prime is 811989119.

811989118 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811989119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65880 + ... + 77227.

It is an arithmetic number, because the mean of its divisors is an integer number (152302689).

Almost surely, 2^811989118 is an apocalyptic number.

811989118 is a deficient number, since it is larger than the sum of its proper divisors (406432394).

811989118 is a wasteful number, since it uses less digits than its factorization.

811989118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145946.

The product of its digits is 41472, while the sum is 46.

The square root of 811989118 is about 28495.4227552426. The cubic root of 811989118 is about 932.9321715047.

The spelling of 811989118 in words is "eight hundred eleven million, nine hundred eighty-nine thousand, one hundred eighteen".