1089964120 has 48 divisors (see below), whose sum is σ = 2804186160. Its totient is φ = 373512576.

The previous prime is 1089964103. The next prime is 1089964151. The reversal of 1089964120 is 214699801.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 551454 + ... + 553426.

It is an arithmetic number, because the mean of its divisors is an integer number (58420545).

Almost surely, 2^1089964120 is an apocalyptic number.

1089964120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089964120 is an abundant number, since it is smaller than the sum of its proper divisors (1714222040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089964120 is an frugal number, since it uses more digits than its factorization.

1089964120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1089964120 is about 33014.6046470346. The cubic root of 1089964120 is about 1029.1311742055.

The spelling of 1089964120 in words is "one billion, eighty-nine million, nine hundred sixty-four thousand, one hundred twenty".