1089338784 has 48 divisors (see below), whose sum is σ = 3027725568. Its totient is φ = 341752832.

The previous prime is 1089338779. The next prime is 1089338827. The reversal of 1089338784 is 4878339801.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 332112 + ... + 335375.

It is an arithmetic number, because the mean of its divisors is an integer number (63077616).

Almost surely, 2^1089338784 is an apocalyptic number.

It is an amenable number.

1089338784 is an abundant number, since it is smaller than the sum of its proper divisors (1938386784).

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

1089338784 is a wasteful number, since it uses less digits than its factorization.

1089338784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667517 (or 667509 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 1089338784 is about 33005.1326917496. The cubic root of 1089338784 is about 1028.9343249476.

The spelling of 1089338784 in words is "one billion, eighty-nine million, three hundred thirty-eight thousand, seven hundred eighty-four".