1188650228 has 6 divisors (see below), whose sum is σ = 2080137906. Its totient is φ = 594325112.

The previous prime is 1188650227. The next prime is 1188650249. The reversal of 1188650228 is 8220568811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 656794384 + 531855844 = 25628^2 + 23062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188650227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148581275 + ... + 148581282.

It is an arithmetic number, because the mean of its divisors is an integer number (346689651).

Almost surely, 2^1188650228 is an apocalyptic number.

It is an amenable number.

1188650228 is a deficient number, since it is larger than the sum of its proper divisors (891487678).

1188650228 is a wasteful number, since it uses less digits than its factorization.

1188650228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297162561 (or 297162559 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 41.

The square root of 1188650228 is about 34476.8071027466. The cubic root of 1188650228 is about 1059.2976918992.

The spelling of 1188650228 in words is "one billion, one hundred eighty-eight million, six hundred fifty thousand, two hundred twenty-eight".