1229795205 has 16 divisors (see below), whose sum is σ = 2015665344. Its totient is φ = 639893120.

The previous prime is 1229795179. The next prime is 1229795209. The reversal of 1229795205 is 5025979221.

It is not a de Polignac number, because 1229795205 - 2⁵ = 1229795173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229795209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999219 + ... + 1000448.

It is an arithmetic number, because the mean of its divisors is an integer number (125979084).

Almost surely, 2^1229795205 is an apocalyptic number.

1229795205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1229795205 is a deficient number, since it is larger than the sum of its proper divisors (785870139).

1229795205 is a wasteful number, since it uses less digits than its factorization.

1229795205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999716.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 1229795205 is about 35068.4360215850. The cubic root of 1229795205 is about 1071.3818013997.

The spelling of 1229795205 in words is "one billion, two hundred twenty-nine million, seven hundred ninety-five thousand, two hundred five".