1089218812 has 24 divisors (see below), whose sum is σ = 2092188672. Its totient is φ = 492058800.

The previous prime is 1089218791. The next prime is 1089218857. The reversal of 1089218812 is 2188129801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68764 + ... + 83107.

It is an arithmetic number, because the mean of its divisors is an integer number (87174528).

Almost surely, 2^1089218812 is an apocalyptic number.

It is an amenable number.

1089218812 is a deficient number, since it is larger than the sum of its proper divisors (1002969860).

1089218812 is a wasteful number, since it uses less digits than its factorization.

1089218812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152049 (or 152047 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 1089218812 is about 33003.3151668132. The cubic root of 1089218812 is about 1028.8965503995.

The spelling of 1089218812 in words is "one billion, eighty-nine million, two hundred eighteen thousand, eight hundred twelve".