1115206161 has 8 divisors (see below), whose sum is σ = 1521521760. Its totient is φ = 726180672.

The previous prime is 1115206151. The next prime is 1115206189. The reversal of 1115206161 is 1616025111.

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

It is not a de Polignac number, because 1115206161 - 2⁶ = 1115206097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1115206151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4322376 + ... + 4322633.

It is an arithmetic number, because the mean of its divisors is an integer number (190190220).

Almost surely, 2^1115206161 is an apocalyptic number.

It is an amenable number.

1115206161 is a deficient number, since it is larger than the sum of its proper divisors (406315599).

1115206161 is an equidigital number, since it uses as much as digits as its factorization.

1115206161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8645055.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1115206161 is about 33394.7025888838. The cubic root of 1115206161 is about 1037.0150358611.

The spelling of 1115206161 in words is "one billion, one hundred fifteen million, two hundred six thousand, one hundred sixty-one".