1089944612 has 24 divisors (see below), whose sum is σ = 1919721216. Its totient is φ = 541463328.

The previous prime is 1089944591. The next prime is 1089944657. The reversal of 1089944612 is 2164499801.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 653003 + ... + 654669.

It is an arithmetic number, because the mean of its divisors is an integer number (79988384).

Almost surely, 2^1089944612 is an apocalyptic number.

It is an amenable number.

1089944612 is a deficient number, since it is larger than the sum of its proper divisors (829776604).

1089944612 is a wasteful number, since it uses less digits than its factorization.

1089944612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627 (or 2625 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1089944612 is about 33014.3092007087. The cubic root of 1089944612 is about 1029.1250344282.

The spelling of 1089944612 in words is "one billion, eighty-nine million, nine hundred forty-four thousand, six hundred twelve".