1128099650 has 12 divisors (see below), whose sum is σ = 2098265442. Its totient is φ = 451239840.

The previous prime is 1128099631. The next prime is 1128099659. The reversal of 1128099650 is 569908211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 435515161 + 692584489 = 20869^2 + 26317^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1128099598 and 1128099607.

It is not an unprimeable number, because it can be changed into a prime (1128099659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11280947 + ... + 11281046.

Almost surely, 2^1128099650 is an apocalyptic number.

1128099650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128099650 is a deficient number, since it is larger than the sum of its proper divisors (970165792).

1128099650 is a wasteful number, since it uses less digits than its factorization.

1128099650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22562005 (or 22562000 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 1128099650 is about 33587.1947325167. The cubic root of 1128099650 is about 1040.9962255053.

The spelling of 1128099650 in words is "one billion, one hundred twenty-eight million, ninety-nine thousand, six hundred fifty".