1121828169 has 16 divisors (see below), whose sum is σ = 1864857600. Its totient is φ = 582767760.

The previous prime is 1121828167. The next prime is 1121828171. The reversal of 1121828169 is 9618281211.

It is an interprime number because it is at equal distance from previous prime (1121828167) and next prime (1121828171).

It is not a de Polignac number, because 1121828169 - 2¹ = 1121828167 is a prime.

It is a super-2 number, since 2×1121828169² = 2516996881523785122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121828167) 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, 2427969 + ... + 2428430.

It is an arithmetic number, because the mean of its divisors is an integer number (116553600).

Almost surely, 2^1121828169 is an apocalyptic number.

It is an amenable number.

1121828169 is a deficient number, since it is larger than the sum of its proper divisors (743029431).

1121828169 is a wasteful number, since it uses less digits than its factorization.

1121828169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856420.

The product of its digits is 13824, while the sum is 39.

The square root of 1121828169 is about 33493.7034231809. The cubic root of 1121828169 is about 1039.0635582535.

It can be divided in two parts, 112 and 1828169, that added together give a palindrome (1828281).

The spelling of 1121828169 in words is "one billion, one hundred twenty-one million, eight hundred twenty-eight thousand, one hundred sixty-nine".