11188985284 has 9 divisors (see below), whose sum is σ = 19581094477. Its totient is φ = 5594386864.

The previous prime is 11188985219. The next prime is 11188985303. The reversal of 11188985284 is 48258988111.

The square root of 11188985284 is 105778.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7712703684 + 3476281600 = 87822^2 + 58960^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 185112 + ... + 238000.

Almost surely, 2^11188985284 is an apocalyptic number.

11188985284 is the 105778-th square number.

It is an amenable number.

11188985284 is a deficient number, since it is larger than the sum of its proper divisors (8392109193).

11188985284 is an frugal number, since it uses more digits than its factorization.

11188985284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105782 (or 52891 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 55.

The spelling of 11188985284 in words is "eleven billion, one hundred eighty-eight million, nine hundred eighty-five thousand, two hundred eighty-four".