1229168505 has 16 divisors (see below), whose sum is σ = 1991566080. Its totient is φ = 647257728.

The previous prime is 1229168503. The next prime is 1229168513. The reversal of 1229168505 is 5058619221.

It is not a de Polignac number, because 1229168505 - 2¹ = 1229168503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1229168503) 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 in 15 ways as a sum of consecutive naturals, for example, 517452 + ... + 519821.

It is an arithmetic number, because the mean of its divisors is an integer number (124472880).

Almost surely, 2^1229168505 is an apocalyptic number.

1229168505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1229168505 is a deficient number, since it is larger than the sum of its proper divisors (762397575).

1229168505 is a wasteful number, since it uses less digits than its factorization.

1229168505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037360.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 1229168505 is about 35059.4994972832. The cubic root of 1229168505 is about 1071.1997794776.

The spelling of 1229168505 in words is "one billion, two hundred twenty-nine million, one hundred sixty-eight thousand, five hundred five".