1168420209 has 32 divisors (see below), whose sum is σ = 1743565824. Its totient is φ = 689868480.

The previous prime is 1168420177. The next prime is 1168420223. The reversal of 1168420209 is 9020248611.

It is not a de Polignac number, because 1168420209 - 2⁵ = 1168420177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 1168420209.

It is not an unprimeable number, because it can be changed into a prime (1168420249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712939 + ... + 714575.

It is an arithmetic number, because the mean of its divisors is an integer number (54486432).

Almost surely, 2^1168420209 is an apocalyptic number.

It is an amenable number.

1168420209 is a deficient number, since it is larger than the sum of its proper divisors (575145615).

1168420209 is a wasteful number, since it uses less digits than its factorization.

1168420209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1168420209 is about 34182.1621463593. The cubic root of 1168420209 is about 1053.2537643410.

The spelling of 1168420209 in words is "one billion, one hundred sixty-eight million, four hundred twenty thousand, two hundred nine".