1138866650 has 48 divisors (see below), whose sum is σ = 2271952800. Its totient is φ = 423408960.

The previous prime is 1138866637. The next prime is 1138866667. The reversal of 1138866650 is 566688311.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 39041 + ... + 61659.

It is an arithmetic number, because the mean of its divisors is an integer number (47332350).

Almost surely, 2^1138866650 is an apocalyptic number.

1138866650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138866650 is a deficient number, since it is larger than the sum of its proper divisors (1133086150).

1138866650 is a wasteful number, since it uses less digits than its factorization.

1138866650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22703 (or 22698 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1138866650 is about 33747.0983937879. The cubic root of 1138866650 is about 1044.2976286474.

The spelling of 1138866650 in words is "one billion, one hundred thirty-eight million, eight hundred sixty-six thousand, six hundred fifty".