1115471161 has 8 divisors (see below), whose sum is σ = 1275884864. Its totient is φ = 955322640.

The previous prime is 1115471111. The next prime is 1115471173. The reversal of 1115471161 is 1611745111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115471161 - 2⁹ = 1115470649 is a prime.

It is a super-2 number, since 2×1115471161² = 2488551822045375842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115471111) 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 7 ways as a sum of consecutive naturals, for example, 57195 + ... + 74176.

It is an arithmetic number, because the mean of its divisors is an integer number (159485608).

Almost surely, 2^1115471161 is an apocalyptic number.

It is an amenable number.

1115471161 is a deficient number, since it is larger than the sum of its proper divisors (160413703).

1115471161 is a wasteful number, since it uses less digits than its factorization.

1115471161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132591.

The product of its digits is 840, while the sum is 28.

The square root of 1115471161 is about 33398.6700483717. The cubic root of 1115471161 is about 1037.0971693206.

The spelling of 1115471161 in words is "one billion, one hundred fifteen million, four hundred seventy-one thousand, one hundred sixty-one".