1229950665 has 12 divisors (see below), whose sum is σ = 2131914564. Its totient is φ = 655973664.

The previous prime is 1229950651. The next prime is 1229950721. The reversal of 1229950665 is 5660599221.

It is a happy number.

1229950665 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 495107001 + 734843664 = 22251^2 + 27108^2 .

It is not a de Polignac number, because 1229950665 - 2⁸ = 1229950409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 27332237 = 1229950665 / (1 + 2 + 2 + 9 + 9 + 5 + 0 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1229950665.

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, 13666074 + ... + 13666163.

It is an arithmetic number, because the mean of its divisors is an integer number (177659547).

Almost surely, 2^1229950665 is an apocalyptic number.

1229950665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1229950665 is a deficient number, since it is larger than the sum of its proper divisors (901963899).

1229950665 is a wasteful number, since it uses less digits than its factorization.

1229950665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27332248 (or 27332245 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 1229950665 is about 35070.6524746832. The cubic root of 1229950665 is about 1071.4269444166.

The spelling of 1229950665 in words is "one billion, two hundred twenty-nine million, nine hundred fifty thousand, six hundred sixty-five".