1189500066 has 24 divisors (see below), whose sum is σ = 2672704944. Its totient is φ = 396499860.

The previous prime is 1189500031. The next prime is 1189500071. The reversal of 1189500066 is 6600059811.

1189500066 is a `hidden beast` number, since 11 + 89 + 500 + 0 + 66 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1189500066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1223280 + ... + 1224251.

It is an arithmetic number, because the mean of its divisors is an integer number (111362706).

Almost surely, 2^1189500066 is an apocalyptic number.

1189500066 is an abundant number, since it is smaller than the sum of its proper divisors (1483204878).

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

1189500066 is an equidigital number, since it uses as much as digits as its factorization.

1189500066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447548 (or 2447536 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1189500066 is about 34489.1296787843. The cubic root of 1189500066 is about 1059.5500837726.

Adding to 1189500066 its reverse (6600059811), we get a palindrome (7789559877).

The spelling of 1189500066 in words is "one billion, one hundred eighty-nine million, five hundred thousand, sixty-six".