1115853169 has 4 divisors (see below), whose sum is σ = 1119164644. Its totient is φ = 1112541696.

The previous prime is 1115853131. The next prime is 1115853173. The reversal of 1115853169 is 9613585111.

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 163328400 + 952524769 = 12780^2 + 30863^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115853169 - 2¹⁵ = 1115820401 is a prime.

It is a super-2 number, since 2×1115853169² = 2490256589534685122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115853199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655232 + ... + 1655905.

It is an arithmetic number, because the mean of its divisors is an integer number (279791161).

Almost surely, 2^1115853169 is an apocalyptic number.

It is an amenable number.

1115853169 is a deficient number, since it is larger than the sum of its proper divisors (3311475).

1115853169 is an equidigital number, since it uses as much as digits as its factorization.

1115853169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311474.

The product of its digits is 32400, while the sum is 40.

The square root of 1115853169 is about 33404.3884691817. The cubic root of 1115853169 is about 1037.2155450684.

The spelling of 1115853169 in words is "one billion, one hundred fifteen million, eight hundred fifty-three thousand, one hundred sixty-nine".