1206828169 has 4 divisors (see below), whose sum is σ = 1206947844. Its totient is φ = 1206708496.

The previous prime is 1206828167. The next prime is 1206828191. The reversal of 1206828169 is 9618286021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313714944 + 893113225 = 17712^2 + 29885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206828169 - 2¹ = 1206828167 is a prime.

It is a super-3 number, since 3×1206828169³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206828167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43162 + ... + 65395.

It is an arithmetic number, because the mean of its divisors is an integer number (301736961).

Almost surely, 2^1206828169 is an apocalyptic number.

It is an amenable number.

1206828169 is a deficient number, since it is larger than the sum of its proper divisors (119675).

1206828169 is a wasteful number, since it uses less digits than its factorization.

1206828169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119674.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 1206828169 is about 34739.4324795325. The cubic root of 1206828169 is about 1064.6703172560.

The spelling of 1206828169 in words is "one billion, two hundred six million, eight hundred twenty-eight thousand, one hundred sixty-nine".